110 Electrical Problems

Hi

Having been delighted to get my 1983 110 V8 CSW through its MOT with flying colours a couple of weeks ago, I was a bit surprised when the rear fog light came on yesterday and refused to go off unless the headlights were also off. I have isolated the switch, but to no avail - it appears that a live feed has found its way onto the wiring feeding the fog lamp and dashboard indicator.

I have had the wiring at the back appart to investigate and found that it is a real mess - it appears that when a previous owner wanted to fit an auxillary towing socket, he simply cut off the existing wiring and added two new sockets, wiring one of them directly into the loom behind the rear offside wheel, rather than doing it properly inside the rear cabin. The original wiring was left in place. Anyway, having said all that, I still cannot find a live feed connected to the fog lamp (red and yellow wire). I am also slightly puzzled as to why there are 2 red/yellow wires in the rear loom, one of which is of significantly heavier guage than the other. What appears to happen is that the heavy guage wire comes out of the loom at the back, into a connector where the feed to the fog lamp is taken off, and then the lighter guage wire goes back underneath the body, where it is spliced into the towing socket wiring as well as disappearing back into the loom, appearing to go back towards the front of the vehicle. Both red/yellow wires appear to be a part of the original loom.

Any thoughts/suggestions much appreciated, as I am a bit stumped!

Regards

Neil

Reply to
Neil Cummins
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In article , Neil Cummins writes

Couple of things: could it be that one of the switches is falling apart? Also, I've assumed you're getting normal brightness from the fog lamp - is that correct?

Regards,

Simonm.

Reply to
SpamTrapSeeSig

Could be virus. My rear lights are playing up aswell on my 110 v8 csw. I put new one's in and now there playing up. While engine on passenger works. Turn off and put light on the driver side work and then doesn't Sure the wiring correct like for like. Anybody with clues welcome I still think this is a virus sorely tempted to reboot. ;)

Reply to
John Oakes

Simon

Any idea which switch? I've taken the fog lamp switch totally out of circuit, with no effect. Testing at the switch connector shows 12v on both wires. I'll take a look at the headlight switch, but I can't see at the moment how that could feed directly to the fog lamp without going through the fog switch.

Regards

Neil

Reply to
Neil Cummins

How do you do?

Are you sure this is a new problem? Could it be the bulb was replaced for the MOT and you only just noticed?

I have the opposite problem - both the rear fog and reverse lamps chew bulbs like they're going out of fashion. Suspect water ingress to lamp units in the absense (so far) of any other evidence.

An 'as built' electrical drawing would certainly be a boon in solving these mysteries.

btw: can anyone advise if the 2nd position on the fog lamp switch is actually wired to someplace useful or do I need to connect front fog lamp units/relay direct to the switch?

Reply to
William Tasso

It could be a loose/dirty connection making intermittent contact - the flickering that results kills bulbs very quickly.

Reply to
EMB

Aha - thanks for the heads up.

Reply to
William Tasso

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