S3 electric mirror schematics
Discussion
Dear all,
I have a 1990 S3 with electric wing mirrors that does not function. These are not the Citroen type but older "dog ears". I think the mirror are ok, it’s an electrical error.
The problem seems to be that there is no 12V power to the joystick (green cable). The wiring seem to be same as on the wedge type cars with three cables going to the mirror select switch, not 6 cables as the later cars. The joystick has six cables attached.
Since the electric mirrors was "special order" back when, they do not pop up on any schematics I can find. The switch and the joystick schematics are available here courtesy of other PH members.
However I cannot find any info on what fuse is used, where the power comes from or what relays are involved.
In my car there is besides the standard fuse/relay central two additional relays and fuses that comes from the wire loom but just lies on the side. I have no idea what they do and they are not described in the OM book.
I can start follow leads but the entire loom is taped and that will take some time. So if someone knows where the mirrors take their power and if there is a fuse only for them that would be much appreciated.
Kind regards
//Rob
I have a 1990 S3 with electric wing mirrors that does not function. These are not the Citroen type but older "dog ears". I think the mirror are ok, it’s an electrical error.
The problem seems to be that there is no 12V power to the joystick (green cable). The wiring seem to be same as on the wedge type cars with three cables going to the mirror select switch, not 6 cables as the later cars. The joystick has six cables attached.
Since the electric mirrors was "special order" back when, they do not pop up on any schematics I can find. The switch and the joystick schematics are available here courtesy of other PH members.
However I cannot find any info on what fuse is used, where the power comes from or what relays are involved.
In my car there is besides the standard fuse/relay central two additional relays and fuses that comes from the wire loom but just lies on the side. I have no idea what they do and they are not described in the OM book.
I can start follow leads but the entire loom is taped and that will take some time. So if someone knows where the mirrors take their power and if there is a fuse only for them that would be much appreciated.
Kind regards
//Rob
Hi,
Thank you for input. I have searched for info and read most posts but they normally talk about the mirrors and the joystick wiring.
Not much info on how they are fed from the car and if any of the other electric stuff is involved.
It should be enough with the key on, right? No need for the engine to run for the mirrors to work?
I will try to run 12v direct via a fuse tomorrow. However it would be nice to fix the real problem in the power feed.
All info and input much appreciated as TVR wiring is a bit confusing.
Kind regards
//Rob
Thank you for input. I have searched for info and read most posts but they normally talk about the mirrors and the joystick wiring.
Not much info on how they are fed from the car and if any of the other electric stuff is involved.
It should be enough with the key on, right? No need for the engine to run for the mirrors to work?
I will try to run 12v direct via a fuse tomorrow. However it would be nice to fix the real problem in the power feed.
All info and input much appreciated as TVR wiring is a bit confusing.
Kind regards
//Rob
Hi,
Thank you for input.
Having mixed up cables must be worse. I do Think my joystick and side switch is factory standard with no loose cables so that should be ok.
Further along the green +12v cable it becomes more cloudy.... I have no idea where it goes. I probably will have to take the fuse central down. Any good ideas how that is attached? Seem to be bolted with two bolts upwards on the rear side.
I also found a 4rth fuse holder that hold s two fuses and seem to be empty. I will have a closer look on Sunday.
Does anyone know what all the unconnected connectors are for? I have 5 different connectors on the wire look that is not connected to anything. Two are single pole round ones. One is 3-pole and one is 4-pole. There is also a multi pool under the dash behind the glovebox. -A bit odd.
Kind regards
//Rob
Thank you for input.
Having mixed up cables must be worse. I do Think my joystick and side switch is factory standard with no loose cables so that should be ok.
Further along the green +12v cable it becomes more cloudy.... I have no idea where it goes. I probably will have to take the fuse central down. Any good ideas how that is attached? Seem to be bolted with two bolts upwards on the rear side.
I also found a 4rth fuse holder that hold s two fuses and seem to be empty. I will have a closer look on Sunday.
Does anyone know what all the unconnected connectors are for? I have 5 different connectors on the wire look that is not connected to anything. Two are single pole round ones. One is 3-pole and one is 4-pole. There is also a multi pool under the dash behind the glovebox. -A bit odd.
Kind regards
//Rob
Agreed I probably will have to drop the fuse box to see what is going on. I’m pretty certain that the cable loom is all stock so I should be able to follow the cable and find out why there is no 12v power.
One of the problems is that the wire loom is all taped up so you can’t really follow what is going where with the fuse box in place…
I guess the two bolts holding the fuse box goes out into the engine compartment. Are they visible on the “engine side” so I can tighten them later?
One always what to find the “easy way out” but that rarely exist on TVR’s. So I will have to do what I have tried to avoid, drop the entire fuse box. God knows what other failures can follow such maneuver…
I have just changed diff, brakes & hoses, hoses, shocks, ignition, clutch hydraulics, fan, headers, exhaust , seals, bushings and so on so I’m getting pretty used to nothing turning out as expected….
Kind regards
//Rob
One of the problems is that the wire loom is all taped up so you can’t really follow what is going where with the fuse box in place…
I guess the two bolts holding the fuse box goes out into the engine compartment. Are they visible on the “engine side” so I can tighten them later?
One always what to find the “easy way out” but that rarely exist on TVR’s. So I will have to do what I have tried to avoid, drop the entire fuse box. God knows what other failures can follow such maneuver…
I have just changed diff, brakes & hoses, hoses, shocks, ignition, clutch hydraulics, fan, headers, exhaust , seals, bushings and so on so I’m getting pretty used to nothing turning out as expected….
Kind regards
//Rob
Hi
I did take a look today and there are two bolts over the passenger foot well, one vertical and one horizontal.
I will try to take down the fuse box tomorrow. There is definitely something loose up there. Whether is indeed should be loose or not is still to be seen. 
-Will revert with pictures and findings.
Kind regards
//Rob
I did take a look today and there are two bolts over the passenger foot well, one vertical and one horizontal.
I will try to take down the fuse box tomorrow. There is definitely something loose up there. Whether is indeed should be loose or not is still to be seen. 
-Will revert with pictures and findings.
Kind regards
//Rob
There are 8 not used connectors in the passenger foot well. Here are 7 of them pictured.
1 Black 8 pol with only two poles connected, on the "extra loom"
1 Black with 4 poles with only three poles connetced, on the "extra loom"
3 round single pole, one with 2 White Cables (visible on the last picture), one with 2 Green cables ( no not the one..) and one with 3 Red and Blue Cables
1 White with 9 poles but only 7 Cables connected (this may be old door speaker wiring not used as new ones are installed). Don't know what the 3 extrea leads are for, maybe power to the radio.
1 Square Black 6 pole up by the fuse box (last picture) with green Cables and not the one I'm looking for.
The 8-th looks like a Lampda contact 3-pin male and comes from the engine compartment but terminates in the passenger foot well.
Beyond that there are several Cables that just seem to be cut and not isolated and some that are cut and actually isolated (with tape).
Very odd cable loom indeed.
I will now take down the fuse box to see where that takes me.
//Rob
1 Black 8 pol with only two poles connected, on the "extra loom"
1 Black with 4 poles with only three poles connetced, on the "extra loom"
3 round single pole, one with 2 White Cables (visible on the last picture), one with 2 Green cables ( no not the one..) and one with 3 Red and Blue Cables
1 White with 9 poles but only 7 Cables connected (this may be old door speaker wiring not used as new ones are installed). Don't know what the 3 extrea leads are for, maybe power to the radio.
1 Square Black 6 pole up by the fuse box (last picture) with green Cables and not the one I'm looking for.
The 8-th looks like a Lampda contact 3-pin male and comes from the engine compartment but terminates in the passenger foot well.
Beyond that there are several Cables that just seem to be cut and not isolated and some that are cut and actually isolated (with tape).
Very odd cable loom indeed.
I will now take down the fuse box to see where that takes me.
//Rob
Thank you.
I did drop the the fuse box and found the problem. The prevoius owner had cut the green Power line and just dropped it. That probably means that there is a problem further down the line and the mirrors blew the fuse.
By the way the Electric mirrors run of the "Warning Lights" fuse, 10A. ( I blew one also...)
I will try to measure further down to see if I can isolate the error.
//Rob
I did drop the the fuse box and found the problem. The prevoius owner had cut the green Power line and just dropped it. That probably means that there is a problem further down the line and the mirrors blew the fuse.
By the way the Electric mirrors run of the "Warning Lights" fuse, 10A. ( I blew one also...)
I will try to measure further down to see if I can isolate the error.
//Rob
Mystery solved,
Previous owner ad disconnected 12V power as a result of blowing fuses.
That turned out to be due to completely wrongly wired joystick and also the L/R switch. That short circuited the entire part and blew the fuse.
The brilliant schematics from the Wedge mirrors made it easy to rewire and now it all works. Mine is wired exactly so and even the cable colours match.
I will try to forget about the 8 (eight !!) non connected connectors and just put all the cables back and put her together again.
Next week she will get an all new exhaust and then off to the road with all new road holding gear and working wing mirrors.
Happy S3 owner
//Rob
Previous owner ad disconnected 12V power as a result of blowing fuses.
That turned out to be due to completely wrongly wired joystick and also the L/R switch. That short circuited the entire part and blew the fuse.
The brilliant schematics from the Wedge mirrors made it easy to rewire and now it all works. Mine is wired exactly so and even the cable colours match.
I will try to forget about the 8 (eight !!) non connected connectors and just put all the cables back and put her together again.
Next week she will get an all new exhaust and then off to the road with all new road holding gear and working wing mirrors.
Happy S3 owner
//Rob
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