Old Caterhamian Posted November 20, 2011 Share Posted November 20, 2011 Mot tomorrow and checking the lights, found that the 3rd brake light mod i did a few weeks ago has an issue. Used caterham loom, but when side lights are on and brake applied all the drivers side rear brake and side lights fail to iluminate. When side lights are off, no problem all 3 brake lights work. Help. Andrew F Link to comment Share on other sites More sharing options...
Old Caterhamian Posted November 20, 2011 Author Share Posted November 20, 2011 Update: it's not my mod. Just disconnected the 3rd brake light loom. And same thing happens. Andrew F Link to comment Share on other sites More sharing options...
Eugene Posted November 20, 2011 Share Posted November 20, 2011 Sounds like an earth problem on that side? Earthing through the side light when they are off, but unable to do so when on???? Link to comment Share on other sites More sharing options...
Old Caterhamian Posted November 20, 2011 Author Share Posted November 20, 2011 Many thanks. I will check, but the earth wire looks ok. Am currently stripping down that rear light cluster and wiring. Andrew F Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted November 20, 2011 Share Posted November 20, 2011 Check also for corrosion in the bulb holders. Does the earth wire connect to the chassis somewhere in that corner of the car ? Not sure where ! Link to comment Share on other sites More sharing options...
Old Caterhamian Posted November 20, 2011 Author Share Posted November 20, 2011 Hi Ian, thought you might be monitoring the blatwaves. Just finished puttting it all back together and they work now. Good, but worrying. Not sure if it's a loose wire and have moved it, or I have just tightened up what was loose. Just need to pass MOT tomorrow, then I will keep an eye out for any loose wires over winter. Andrew F Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted November 20, 2011 Share Posted November 20, 2011 If you haven't sealed the drain holes in the top of the lenses with a spot of silicone sealant, and hacksawed a slot in the underside face of each lens, then you will get a build up of moisture inside the light units, which corrodes lampholders and the strands of the earth wire in that screw terminal. You have probably cut through the corrosion when retightening this screw. Link to comment Share on other sites More sharing options...
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