Badassbrother

New Member
My full beams are bringing on brake lights along with fog light and full beam, dipped beam isn’t doing anything, need help urgently as I’m dying to fix it
 
Where various lights come on unexpectedly I’ve found it’s poor earths, If you have the wiring diagram , the colours very simple to identify so it would have been either live or negative issue . So remaking the earths around the front grille always a good start, both front and rear left indicators 12v are green/red and come from the same feed before splitting to front and back so work from there towards front indicator and it will be poor 12v wire/connection or earth not working
 
SIII PETROL WITH FOG AND HEADLIGHT RELAY ADDED normal fuses.png
 
Having spent a few hours scrambling around underneath mine and some awkward nooks and crannies I found, mostly for my sanity, that a bit of blue or green masking tape wrapped around or just stuck on all the terminals or connections I had checked stopped me from utterly confusing myself. If you do find yourself scrambling about down below be armed with a rag, a toothbrush, WD40, aforementioned tape, a sharpie pen and a small torch………….. that flippin works.
 
Having spent a few hours scrambling around underneath mine and some awkward nooks and crannies I found, mostly for my sanity, that a bit of blue or green masking tape wrapped around or just stuck on all the terminals or connections I had checked stopped me from utterly confusing myself. If you do find yourself scrambling about down below be armed with a rag, a toothbrush, WD40, aforementioned tape, a sharpie pen and a small torch………….. that flippin works.
Where are the best places to look
 
Where are the best places to look
As Tottot says follow the diagram above. If you can print it off it helps but if you keep a systematic approach ticking over in your head and start with the big boys, (battery/alternator/starter), use the masking tape or sharpie pen idea to track where you have already been it gets easier. I found three joins that were just hanging in there and the wire and spade connector for the oil pressure light had parted company so get some crimping practice in then do it for real.
 
Do you have tow bar electrics ?
My RHR indicator failed to work off the switch, despite having ground and feed.
Going through the wiring I found an unused towbar loom. Once disconnected - Voila'.
Don't ask me why.
 
Do you have tow bar electrics ?
My RHR indicator failed to work off the switch, despite having ground and feed.
Going through the wiring I found an unused towbar loom. Once disconnected - Voila'.
Don't ask me why.
It’s amazing what you find when you are forced to look hard. I have a tow bar and fittings but I am sure there are no wires. Dammit now I’ll have to check.
When I was scrambling underneath her last week I found an old earth lead still neatly connected to the underside of the engine block but the other end had disappeared long ago. I might investigate it further but a week since the last shenanigans I have 12.6/12.7 from the new,new battery when standing and 14+ when she fires up. I am going for it tomorrow and we are off on a jolly across the wilds of Devon, obviously not that wild as retaining a phone signal will be factored in.😱
She is booked in to go up on a ramp in August, bookings are gold dust these days, so a lot more probing and checking to do then. I know we don’t need an MoT these days but I do like to feel like a responsible adult at times.
 

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