Wiring Diagram - Comments Please

[David_17]

Got the flaher sorted. It was a faulty bulb in the light i was teting it with!

Still no joy with the change over relay yet. I'll have a go at that tomorow

[twinturbo]

Cool, seems odd at first when it does not work.

Modern ones are often a timer relay but these old ones need a load to flip-flop.

TT

[davidimurray]

David, Any luck with the headlight circuit?

I would try pulling out connections 87 from the dip and main beam relays. When you change from sidelights to dip you should be able to hear (and feel if you put your finger on the relay) the relay clicking over, the same should happen when you go to main beam for that relay.

If that's ok then I would check the changeover relay. If you can do a conductivity test, 30 should be connected to 87a when on no lights, sidelights, or dip (just to confirm that is based on continuity not voltage). When you turn the headlights on, the changeover relay should switch, and 30 should now be connected to 87. Make sure that 87 from the headlight relay (not 87A) and 86 are connected together.

Cheers

Dave

[David_17]

Still no luck with it. Think i'll just try a new relay, that's all it can be as far as i can see.

[rapidtornado]

David
Great thread and very useful. I'm in the process of pulling my loom from the doner (2.0i DOHC) and after reading this and a few comments on other threads from TT, I'm really reconsidering using the original loom due to the amount of junk in it that I'll spend days identifying and cutting out.

Can anyone tell me how much the wiring diagram in this thread would change for the 2.0i dohc? I know that the ECU will need to get wired in but can you think of anything else that is not covered in David's wiring diagram?


Cheers
Matt

[davidimurray]

Without knowing the wiring of the DOHC generally the loom will stay the same apart form the last two (ignition and fuel circuits) relay circuits on the last page. TwinTurbo is the man who can probably help you on the specifics of the DOHC ECU

[twinturbo]

All sierra's have a stand alone engine loom, they are connected to the body loom via 3 connectors. the DOHC usualy conforms to the post 90 wiring. the best bet it so remove the engine loom and salvage the plugs that it plugs into.

More details of the plugs ( not totaly complete ) can be found on my website, although it's aimed at people converting to the 24V v6.

TT

[james3004]

What size wire did you use from the mega fuse to Relays/fuses Ect..?