headlights

[barnhug]

hi my s1 350i headlights are playing up, lights working fine up and down but full beam staying on ,swapped relays around now keeps blowing drivers side light fuse,so wont go up or down ,checked back of fuse board etc all seams fine ,bibie does not show my fuse or relay board type ,any help cheers scott.

[gsx600]

I reckon your dim dip module has failed

Well these were the same symtoms when mine failed

The dim dip unti is the unit to put headlights on dim when sidelights on and pop ups pop up !

Is a black box under the dash (think drivers side ?) that says Lucas on it

[Wedg1e]

If it's a 'B' plate car (1984/5 IIRC) then it would be unlikely to have dim-dip lighting; that didn't come in until the stupidity years around 1989...

Edit: have a look here for some wiring diagrams:

http://www.wedgeneering.co.uk/TVR%20390SE%20p6.htm

I'm a bit puzzled by your remark about 'blowing driver's side fuse'... the main and dipped filaments are paired so if one goes out the other should too. Which is not to say your car doesn't have different wiring...
For the main beams to stay on regardless of the position of the column dip/main switch would require a stuck relay or maybe the dip/main switch itself is iffy.
If you swap relays, make absolutely sure you don't use the one from the injection system that has two '87' terminals on it; that would try to light dips and mains at the same time, which WOULD blow fuses...

Edit again: if you mean the driver's side MOTOR fuse keeps blowing then it sounds like the motor is faulty or jammed... but that wouldn't affect the ability to switch between dip and main beams.

Edited by Wedg1e on Tuesday 2nd February 12:56

[adam quantrill]

I once had a bulb fault where the stop and tail were shorted together, it took ages to find 'cos you don't think that could be the problem. So it's worth checking the headlamp bulbs too for shorts.

[barnhug]

thanks for your help chaps,wegd1e you where right about those relays cheers,pods up and down etc but still cant find why full beam stays on ,checked relays etc but when you flash full beam red lights on dash flash too,also found grey box above relays with six connections feeding it,is that dip beam module,mines an 85 s1,iwas thinking maybe a bad earth, anybody got advice cheers scott.

[Big Daft Lad]

There may be a problem with the stalk? Worth a look.

If it makes you feel any better I spent 3 hours last night trying to get my lights to work properly......I hate electrickery!

[Wedg1e]

barnhug said:

thanks for your help chaps,wegd1e you where right about those relays cheers,pods up and down etc but still cant find why full beam stays on ,checked relays etc but when you flash full beam red lights on dash flash too,also found grey box above relays with six connections feeding it,is that dip beam module,mines an 85 s1,iwas thinking maybe a bad earth, anybody got advice cheers scott.

Module above the relays is probably the delay timer for the wash/wipe: if it is it'll have the following coloured wires...
Brown/Lt. Green
Green
Red/Lt. Green
Lt. Green/Black
Yellow/Lt. Green
Black

Probably badged 'Pektron', they made a lot of simple electronics stuff for Brit cars.

The dim/dip had...

Grey
Blue
Brown/White
Red
Yellow/Blue



RED lights on dash flash!? WTF? Could certainly be a bad earth with symptoms like that. Bit odd though; the headlamps are all earthed through a stud at the front nearside suspension tower... might be worth undoing, polishing up all the ring terminals and reassembling.