5 replies to this topic

[AnthonyR]

1989 City E

With a few niggles showing their heads in the wiring I'm trying to decipher the Haynes wiring diagram (1988-on carb models) in order to get my head round the circuits before doing any work.

Is the Haynes manual diagram known to be correct?

Could someone please advise where the main beam headlights (2x no. 34) get their feed in from?

For flasher duty I follow the Purple wire from flasher switch 56 then through dipswitch 50 exiting as blue/white wire to main beam bulbs and spurred to main beam warning lamp.

But where is the wire on dipswitch 50 that feeds the main beam bulbs (2x no. 34) when actually switched on ie. not just for flashing duty?

The only other wires I have on my diagram from dipswitch 50 are blue (feed out for fog lamp) and blue/brown from the dim/dip relay. This wire however I have searched to find is popular to modify by attaching to the Bl/R (dipped beam wire) to bypass the relay so this surely can't be the feed I'm looking for?

Any help appreciated cheers Anthony

[KernowCooper]

I did the full circuit in the FAQs electrical section with colour by wire on the diagram if that helps

[AnthonyR]

Brilliant cheers. You see that diagram makes perfect sense and appears perfectly simple to follow.

It is however different to the Haynes diagram I'm working from! Presumably your diagram has the dim/dip relay removed?

[KernowCooper]

Yes no dim dip in that diagram

[AnthonyR]

So if I was to build a complete new loom, wanting to remove the dim/dip relay, I could rewire the new circuit as per your diagram?

Would there be any advantage (reliability say) to adding in relays at the same time to take the pressure off the wiring/switches?

[KernowCooper]

Yes of course you can but use 4 relays so no one light failure takes you into darkness