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Rear light and indicators wiring.

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Dolomite_:
The previous owner had the wrong rear indicators so I managed to get a nice original pair from 400fourbits. Ive tested them and got them working. Im guessing the ones on the bike were aftermarket because they didn't have the ground wire. How is this ground wire usually routed? Is it under the seat and into the bit with all the connections from the rear?

The tail light assembly might also have been aftermarket or from a slightly different model. The rear indicators were on a rod that goes through the rear light assembly and not on the little storks from the end of the frame.

Is the rear light meant to light up all the time like the low beam in the headlight? Mine doesn't seem to be lighting up, although I cant remember if it did previously... The brake light works fine. There are only 2 wires coming from the rear light, 1 red,1 black. The wiring diagram says there should be 3 so I appear to be missing the green ground.

I've tested the bulb and both filaments work. I have also tested running a ground wire from different points on the light bracket but it still doesn't light up unless the brake is pulled.

Can anyone spread some "light" on my wiring.

McCabe-Thiele (Ted):
Not sure what model you have but this coloured wiring diagram should help you sort the rear lamp out.
It's pretty straight forward - power to the rear side light from the loom, power from the rear brake lamp switch, an earth for the rear lamp unit that earths both filaments.

The indicator earth terminals on the stalk brackets tend to rot out - I fitted an earth terminal inside the indicators that goes down the mounting stalk and is earthed under the seat to an extra earth I fitted.

If you are not using a standard wiring loom but a Motogadget then I cant help you.

Bryanj:
Standard rear light has brown, green and green/yellow wires  so light is not standard and yes all the connectors should be in therubber boot

Dolomite_:
I replaced the main loom with this one https://www.electrexworld.co.uk/acatalog/WH-377.html a while ago and it all matches up with the diagrams I've used. I think its just an aftermarket rear light that's being iffy.

Should the tail light be on when the low beam is on?

I think for the time being I'll get the indicators connected so I can finally ride it and add the rear light from DSS to my list. But also in the meantime have a fettle about with the rear light to see if I can add the 3rd missing wire.

Laverda Dave:
The tail light should be on when the low beam is on simply because you have turned your lights on. The stop lamp should only illuminate when you apply the front or rear brake. If the stop light is on all the time check the rear light switch is adjusted correctly as if not it will always be on.
The electrex world loom is a very good product. The rear indicator earth spade connectors are included and these fix onto the tangs spot welded on the rear of the indicator mountings (and break off as mentioned by Ted as as happened to me a couple of weeks ago).

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