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Left side indicators not working.

DerekJ

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My left side indicators stopped working at the weekend. May or may not be connected to the fact I was at a Hillclimb where there was heavy rain during the event and the 200 mile round trip.

The facts are:

- Indicators operate by switch on the dashboard not via a trafficator.
- Brake lights work
- Front and rear side lights work
- Indicators work on the right side
- All filaments in left side bulbs are intact.
- I have 12 volts at the solenoid connections on the relay box (connection numbers, 8, right side and 4, left side)
- Connections 3 and 2 (left side indicators) read between 2 and 5 volts approx when indicator switch is on
- Connections 7 and 6 (right side indicators) appear to fluctuate between 3 and 8 volts when indicators operating correctly
- When left side indicator switch is selected I can hear the clicking of the indicator relay itself.
- the external wire connections to the relay box appear to be ok but I will re-check.

Does the above mean the problem may be in the large relay box?

Only other thing might be a poor connection of the green/red wire to the front light or the purple/white wire to the rear.

Any other ideas?
 
Cleaned everything up including the earths etc. Its was a real muddy mess up there under the front mudguard although the relay box all looked fine. That didn't do it but changing the bulb over did!!! Always pays to do the easy stuff first. I had examined the bulb and it seemed the filaments were intact but maybe it has another problem. Anyway the clean up was needed so no problem.
 
You might have a just enough buildup on the bulb contacts to cause them to lose touch with each other but not really show as corroded. I have the occasional same issue on another car and usually pulling and reseating the bulb, sometimes with a quick wipe of steel wool or sandpaper always fixes it.
 
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