Dim Dip relay problem - dave600
anyone know which relays are for the dim/dip on one of these?

the switch that boosts the volts from 5ish to full load doesn't seem to be working and i'm thinking it must live in the relay/s??

so the car has failed MOT and Citroen don't seem to have a relay diagram in car and there is no haynes manual in town....not even in the library!!..bummer

not gettin hands dirty today so if anyone can point me in right direction before I have to rip out all the relays it would be much appreciated...


its had its earth points cleaned and the relays are under the steering wheel and a few in engine compartment fusebox but no diagram tellin whats what...

basically the dim/dip isnt bright enough..sides and main are fine

only 5 volts going to dim/dip wiring but I think this is normal as there is an automatic switch somewhere that increases this when dim/dip is on but seems switch may be faulty and not increasin load meanin lights stay dim......??? hmmm
s
Dim Dip relay problem - PhilW
dave,
If you don't get the answer here, you it's worth trying here
www.frenchcarforum.co.uk/forum/viewforum.php?f=3
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Phil
Dim Dip relay problem - dave600
thank you for that info i will have a look on there too. greatly appreciated
Dim Dip relay problem - RichardW
Dave,

There is a dim-dip relay somewhere, but I don't know where (I'll have a look and see if Hyanes makes a suggestion). What is supposed to happen is that if you have the lights switched to side lights only and the engine running, then the dim-dip relay is energised. This lights the dip beams, but in series with a big resistor, hence giving dim dip headlights. The resistor is a round canister about 4" long, usually secreted along side the radiator somewhere. Interestingly we have the start of similar troubles with our ZX - sometimes when you switch on to what should be full dip beam you only get dim-dip - pulling the switch to full beam makes the full dip come on. I suspect this is due to a relay in the full dip circuit sticking, rather than the dim-dip relay. However, haynes does not elude to a headlight relay anywhere, and I haven't gone looking for one.

Whilst writing this post however, I have thought of a solution - find the dim dip resisitor, cut the wires and join them together, then with engine running you will always get full dip lights. I think this will MOT OK - don't remember there being a requirement to have side lights only with engine running.
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RichardW

Is it illogical? It must be Citroen....
Dim Dip relay problem - RichardW
Just remembered I have an electronic version of manual here.... Although no location is given for the DD relay, it is shown with dashboard wiring harness on both sides, so it's fair to assume it's in the inside fuse board. I'm pretty sure this is not the problem though. Might be worth sitcking a meter across the column switch to see if you are actually getting 12V down the dip wire at the appropriate time. I changed the column siwtch in ours as I was sure this was the fault - and it did seem to go away for a while, but we still seem to have the same trouble - I find it hard to believe the new switch has gone faulty in such a short time, and am sure the fault lies elsewhere.
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RichardW

Is it illogical? It must be Citroen....
Dim Dip relay problem - Victorbox
Certainly is OK to bypass dim dip. Vauxhall dealers were doing this at service time in the early nineties on the quiet after a few caught fire! Only evidence was that they had been rummaging around in driver's side foot well probably behind side kick panel & no more dim dip... or interference on the cassette player funnily enough.
 

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