GT mediated Awesomeness

Tell us about life with your BX, or indeed life in general!
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saintjamesy89
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Re: GT mediated Awesomeness

Post by saintjamesy89 »

Maybe poorly chosen words John! The two fans that move air through the hvac (blower? Heater? Fans) at the moment are always on when ignition is on - even when the hvac speed control slider on the MK1 is pushef far to the left.
On a non-a/c car this would be '0' or off, but the a/c hvac speed control is the variable resistor type (i think) not a position/speed of 1/2/3 in the standard mk1.
The radiator/coolant fans seem to function as normal without the a/c system being a factor (ie just coolant temp) - i'll be testing this via the drier pressure switch soon.
I was also commenting on the full hvac fan speed working via the hvac relay (control slider far to the right, bypassing resistor so full 12v from battery), a bonus in an ancient and unknown electrical system!

Hmm, interesting. The a/c hvac certainly doesn't have a scuttle flap, the non-a/c i can't remember.

Your praise is very welcome! I feel hurried now for this project, I wanted to install a decent remote central locking system and started looking at all sorts of smart options like remote start, puddle lights, proximity unlocking etc. That will all have to wait i think. But at least some good progress is being made and i can soon use the car again 😎
Last edited by saintjamesy89 on Mon Oct 27, 2025 9:18 am, edited 1 time in total.
I'm not a Saint, or a James, but a Tom Saint-James!

Mes voitures:
1985 Citroen BX19 GT
1988 Volvo 740 2.3 HPT GL Hearse
2007 Lexus RX 400h SE hybrid
2007 Citroen C6 Lignage 2.2HDI manual
2013 Lexus RX 450h Luxury
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Jugostran
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Re: GT mediated Awesomeness

Post by Jugostran »

Remote central locking? I think the most elegant would be using a PLIP, as that is what BXs with remote central locking had from factory. You could salvage the PLIP and system from a later BX (as the only Mk1s with PLIPs were Digits) - if its a non-sunroof car with a dark grey interior, it should be plug and play and look like a factory job (the sensor for the PLIP is located behind the center reading light on the roof).
Proud owner of a 1989 Yugoslavian Domestic Market Cimos-Citroën BX 16 TRS

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saintjamesy89
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2013 Nissan Leaf Acenta 24Kw
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Re: GT mediated Awesomeness

Post by saintjamesy89 »

Thats something i've thought about, certainly. I'd rather go a bit more modern though, with a concealed detector/sensor and possibly even fit the new remote innards into a suitably period Citroen fob - size permitting etc.

More rsearch needed though!
I'm not a Saint, or a James, but a Tom Saint-James!

Mes voitures:
1985 Citroen BX19 GT
1988 Volvo 740 2.3 HPT GL Hearse
2007 Lexus RX 400h SE hybrid
2007 Citroen C6 Lignage 2.2HDI manual
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Jugostran
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Re: GT mediated Awesomeness

Post by Jugostran »

Using an actual BX fob (aka PLIP) would be an interesting choice. Because when installing modern upgrades in an old car they tend to really stick out and not fit in, so it's often quite difficult to do.
Proud owner of a 1989 Yugoslavian Domestic Market Cimos-Citroën BX 16 TRS

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Jaba
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Re: GT mediated Awesomeness

Post by Jaba »

An RF remote is the way to go. I fitted mine in the place at the top of the screen where the plip receiver and sunroof switch goes. Its a simple conversion job as 12v is up there already.
The Joy of BX with just one Citroën BX to my name now. Will I sing Bye Bye to my GTI or will it be Till death us do part.
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saintjamesy89
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2013 Nissan Leaf Acenta 24Kw
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Re: GT mediated Awesomeness

Post by saintjamesy89 »

Thanks for the remote c/l thought guys, appreciated.

Todays progress then, finishing the wiring inside the car which was mainly for the headunit and speakers, but sorted nontheless. I decided to go ahead with the rear C pillar wiring anyway and it was much easier than expected! Using a blunt flablade screwdriver, I just pushed the speaker wires behind the A pillar trims and then between the door seals and headlining. Getting behind the interior lights at the top of the B pillar was a little more tricky, they are quite firmly attached, but gentle persuasion won.





Thankfully most modern headunits have a common pin out pattern, the existing wiring that I installed for the previous head unit before the 2017 challenge was exactly the same, so I left it in place! The new head unit came with a few extra wires such as steering wheel, 'mute earth' (whatever that is!) and other wires that have no relevance here. I did wire in the dimmer/rheostat wire this time for completeness. I also found the connectors for the wiring plugs I bought in 2017 and wired in the rear speakers. I used extra plug connectors for the power and speaker wiring so that the head unit can be easily swapped in the future.



DAB antenna, also with the wiring tucked behind the A pillar.



Onto the scuttle panel, I wanted to get this back together before the dash to make sure the recirculation flaps sit and seal correctly, they will only be held in by one bolt and their connection to the blower fans, so getting them right is important here. If you haven't played in the scuittle area, It is a bit like advanced tetris trying to get all the bits back in! I tried a few angles of attack before giving up and removing the washer reservoirs again, then the recirc flaps can go in, followed by the blower fans.

New foam gaskets, not the prettiest but hopefulyy they will seal much better than the original foam that was very compressed and/or falling to bits.











Scuttle back on, with windscreen wiper and everything. It's starting to look more like a car and less like a parts storage bin.



Next, engine bay finishing. I started with the A/C pipes, a very kind man on here made these for me at cost a while back and the shinyness still makes me happy! Sadly i ran onto two problems, firstly the condenser port that connects to the compressor pipe had such poor condition thread that even though I tried quite hard, I ended up cross threading and stripping the top two thread windings... The second issue was the compressor connections, the pipe securing nuts don't go over the threads - they are too small. This is odd, as these pipes are copies of the originals that came on the TRS. So a few things to think about there, perhaps an adaptor for the compressor or crimping new ends to the pipes and I will start looking again for a replacement condenser... Wish me luck!

The charge ports have been moved to the drier/battery area for easy system filling etc. The origianl hoses have the fill ports right by the compressor, under the car - daft!



I also reattached the HVAC coolant hoses, gave the engine bay a once over, filled with new coolant, started her up and got it up to temperature until the fans came on - all good. No leaks, I regularly topped up the coolant as it burped itself. VERY toasty heater inside the car, that's for sure! Good stuff.

Tomorrow? Dash reinstallation with all that entails and we're back on the road! I'm looking forward to that hugely.
I'm not a Saint, or a James, but a Tom Saint-James!

Mes voitures:
1985 Citroen BX19 GT
1988 Volvo 740 2.3 HPT GL Hearse
2007 Lexus RX 400h SE hybrid
2007 Citroen C6 Lignage 2.2HDI manual
2013 Lexus RX 450h Luxury
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saintjamesy89
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1990 Volvo 740 2.3 GLE Estate
2013 Nissan Leaf Acenta 24Kw
x 196

Re: GT mediated Awesomeness

Post by saintjamesy89 »

So i drove the BX home this evening, hurrah!

It's so good to be back in a proper hydraulic Citroen, the C6 is very nice but doesn't have the same waft as the BX. No real issues today apart from not paying attention to the heater control lighting! Not much of it is still illuminated, so fascias back off again in the future...

The new sound system is an incredible upgrade on the previous, the underseat woofera will.add the very much needed bass and the c pillar speaks a bit of audio perspective. Ita not a bad system now, but the dash top 2" jobbies rattle if the bass is turned up.too high - i might see about a rubber seat or similar to act as a cushion between them.and the plastic dash.

I can now use the headlights at the same time as the radio, which is great! Before, the LED headlight bulbs interfered with radio signal.

Proper update soon, i''ve got a load of shifts for the rest of the week but have a usable.BX! Looking forward to tomorrows commute.

The money shot:
20251028_170301.jpg
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I'm not a Saint, or a James, but a Tom Saint-James!

Mes voitures:
1985 Citroen BX19 GT
1988 Volvo 740 2.3 HPT GL Hearse
2007 Lexus RX 400h SE hybrid
2007 Citroen C6 Lignage 2.2HDI manual
2013 Lexus RX 450h Luxury
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panky
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Re: GT mediated Awesomeness

Post by panky »

Hi Tom, where is the 5" speaker mounted. I've had a rummage under the dash but can't see it. There are a couple of wires labeled 'Boom Box' so possible it's been removed.
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saintjamesy89
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1990 Volvo 740 2.3 GLE Estate
2013 Nissan Leaf Acenta 24Kw
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Re: GT mediated Awesomeness

Post by saintjamesy89 »

panky wrote: Tue Oct 28, 2025 10:43 pm Hi Tom, where is the 5" speaker mounted. I've had a rummage under the dash but can't see it. There are a couple of wires labeled 'Boom Box' so possible it's been removed.
I'd be pretty certain you have it in yours, i remember from rustival back along sitting in DKK and being impressed with the differece between the sound quality in our GT's!

It sits between the fuseboard and HVAC, tucked right up inside the dash. You'll need to lie on your back to see what you're about and undo the two 13mm nuts that secure it.
Screenshot_20251029_063627_Photo Editor.jpg
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I'm not a Saint, or a James, but a Tom Saint-James!

Mes voitures:
1985 Citroen BX19 GT
1988 Volvo 740 2.3 HPT GL Hearse
2007 Lexus RX 400h SE hybrid
2007 Citroen C6 Lignage 2.2HDI manual
2013 Lexus RX 450h Luxury
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panky
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Re: GT mediated Awesomeness

Post by panky »

Thanks Tom, I'll take another look.
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panky
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Re: GT mediated Awesomeness

Post by panky »

Found it - how did I miss that :roll: Sounds a bit quiet and distorted though, eBay here I come.
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saintjamesy89
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2013 Nissan Leaf Acenta 24Kw
x 196

Re: GT mediated Awesomeness

Post by saintjamesy89 »

panky wrote: Wed Oct 29, 2025 1:09 pm Found it - how did I miss that :roll: Sounds a bit quiet and distorted though, eBay here I come.
Excellent! It's a fiddle to remove but will be well worth swapping over.

50 odd mile commute in the GT today, lovely stuff. The old girl is more sprightly than i remember - especially after sorting the tyre pressures out! Althpugh there is a bulb behind the heater control panel that shines thrpugh the gap where the slider travels right in your face, rathwr than lluminating the control panel... Need to look into that, its very irritating when dark outside.
I'm not a Saint, or a James, but a Tom Saint-James!

Mes voitures:
1985 Citroen BX19 GT
1988 Volvo 740 2.3 HPT GL Hearse
2007 Lexus RX 400h SE hybrid
2007 Citroen C6 Lignage 2.2HDI manual
2013 Lexus RX 450h Luxury
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panky
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'88 BX GTi (a long time ago)
x 169

Re: GT mediated Awesomeness

Post by panky »

Thread hi-jack continues. New speakers ordered but I'm not expecting miracles as I'm keeping the old Phillips radio cassette. I took DKK out for a blast too and what do you know - no creaks :D. I love that car.
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Jaba
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Re: GT mediated Awesomeness

Post by Jaba »

Two happy drivers. That's what they are for after all.
The Joy of BX with just one Citroën BX to my name now. Will I sing Bye Bye to my GTI or will it be Till death us do part.
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saintjamesy89
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1988 Volvo 740 2.0 GL Hearse
1990 Volvo 740 2.3 GLE Estate
2013 Nissan Leaf Acenta 24Kw
x 196

Re: GT mediated Awesomeness

Post by saintjamesy89 »

As mentioned, I finished the GT reassembly on Tuesday evening meaning I could use it to commute on Wednesday and mooch around here and there since. It's great to be back in a proper Citroen! But I do have some niggles to sort out.

First though , getting the dash and trim all back together was very fiddly and took a significant amount of time! Not helped that the loom and wires had been so disturbed, they seem to just 'sit' where they are rather than be fixed in place, the trim kind of holds the loom where it should be, aming reassembly more fiddly. Not sure if this is how it's supposed to be, but I checked my dissasembly photos and it looks to be the case.

Steering column dropped and dash ready to go in place. I found it easiest to sit on the passenger seat with the dash on my lap to more easily put it in place.



You'll notice the drivers side vent piece is in place here, it goes through the steering column support metalwork so much easier to put this in place first, then pop the dash on top. The passenger side vent pipework I left attached to the dash, this can just be manouvered onto the HVAC from below.



Dash in place, once the HVAC ducts are aligned in just slots into place and can be secured by the two bolts that go into the scutle area, properly fixing it in place.



New 2" speakers installed, i'm thinking of an anti-vibration seat to use betwqeen these and the dash plastic as they vibrate against something when the bass is turned up. I;m also tyoing with making an enclosure for them, so the sound is projected out into the car and no lost inside the dash. The speaker in the bass box underneath the dash sounded significantly better (both bass and clarity) once sealed inside the bass box, so hoepfully the same principle applies here. These speakers are really very good for just 2".



The TRS HVAC uses further ducting for the both the footwell vent positions, on the HVAC output there is just an opening the same as the side dash vents. However in the non-a/c HVAC, these footwell vents have an angled semi obstruction to push air downwards to the footwell without the need to ducting. I was hurried, so I left the GT lower trim panels as they are but obviosuly footwell heating is now not very good... So I will likely swap the TRS footwell ducts onto the GT lower panels - this will need flipping over so it facxes the correct way and some mofifications to fit, especially with all the wiring in place under the drivers GT lower panel.

Top - TRS passenger lower dash trim (LHD car so passengers are on the right hand side)
Bottom - GT passenger lower dash trim (RHD car, so left hand side inside)



Subwoofer wiring ready to go, i've ordered two Infinity Basslink mini's, these are compact at around 29cm by 20cm and should fit just right - I measured the BX underseat area as 30cm wide and for it to be properly tucked underneath, no more than 20cm deep. These should arrive Tuesday, i'm working Wednesday night so hope to have time to fit them Weds morning. Exciting!
The system does need some bass for balance, the three current front speakers have great upper and some mid range sound and the clarity does suffer when the bass is turned up - although theyt handle it well and certainly don't show any distortion etc.

https://www.dynamicsounds.co.uk/infinit ... BwrH_27IXR



30cm wide (measured again to confirm, this was a poor measurement attempt!)


Ideally 20cm deep


And there we have it! All back together, a pretty full on day of work but very satisfying. I replaced a load of instruments panel bulbs so now have full illumination, much better. Although the head unit doesn;t seem to dim on the rheostat any more, it did on Wednesday but not yesterday - I suspect a loose connection, my electrical skills aren't the best.



Syblings reunited! Although these are both hydraulic Citroens, the difference really isd chalk and cheese. The C6 is everything I want a hydraulic Citroen to be, but loses some of it's soul in all that extra refinement. I really think a smaller turbocharged petrol would very much suit the C6, a smooth and refined 2.0 turbo with around/over 180bhp would be amazing I think, especially with minimum lag - you can always hear the DW12 inside the C6 and 4 cylinder diesels aren't the nicesat on the ears!

I'm not a Saint, or a James, but a Tom Saint-James!

Mes voitures:
1985 Citroen BX19 GT
1988 Volvo 740 2.3 HPT GL Hearse
2007 Lexus RX 400h SE hybrid
2007 Citroen C6 Lignage 2.2HDI manual
2013 Lexus RX 450h Luxury