Vespa T5 1989 indicators

[anononmice]

Hi
I have a T5 MK1
Logic tells me it is the relay but I bought a new relay and it has exactly the same issue.

Either the fronts work and the back ones light very dimly a bit brighter when revving or if I switch the relay then the back work properly and the front are dim.

Checked the continuity on everything from relay to switch and back to indicators no problems, checked the earth, hooked an earth up directly from CDI connection box no difference.

Measured voltage it measures 9 volts on the working indicators and the non working/ dim ones measure around 2 volts on idle on the dim ones, front or back depending on which way the relay is connected.

I thought it was the relay but a new one doing exactly the same seems unlikely so any ideas ? Could it be the regulator ? Have I hit the jackpot and got 2 identically faulty relays?

Thanks for any ideas/suggestions

[scooterg]

Intro helps Info
we know what to call you
where you are, might come to help
and it’s nice and decent 
(hey guys I’m being more polite,YES ? )

[anononmice]

Jul 1, 2020 18:34:23 GMT scooterg said:

Intro helps Info
we know what to call you
where you are, might come to help
and it’s nice and decent 
(hey guys I’m being more polite,YES ? )

Sorry, I jumped straight in overly keen, I'm James, I'm in Ireland(Dublin).

[alan34]

James dont know if this will help but I've heard in the past a lot of wireing above the horn all meet together could be worth moving them about as indicators are working. Something might happen good luck with it cheers alan.

[scooterg]

Hi James
Have you tried removing the switch on the handlebars
Mine come loose quite a lot.i spent hours before I found a wire had disconnected

[anononmice]

Jul 2, 2020 12:13:59 GMT alan34 said:

James dont know if this will help but I've heard in the past a lot of wireing above the horn all meet together could be worth moving them about as indicators are working. Something might happen good luck with it cheers alan.

Hi

Thanks for the reply.

I have checked continuity on wiring from switch to under horncover and back to indicators and from relay. All good and when I switch the relay around then front indicators work perfect, then switch relay back and rear indicators work perfect.
So I don't think it is wiring, but I don't think it is relay either now

[anononmice]

Jul 2, 2020 14:07:09 GMT scooterg said:

Hi James
Have you tried removing the switch on the handlebars
Mine come loose quite a lot.i spent hours before I found a wire had disconnected

Hi thanks for reply yes checked switch visually and on continuity and all ok, the insulation on the red wire in the headset was frayed so repaired that, that was causing an intermittent fault when handlebars were turned to the right but that's fixed now.