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Earthing Rear Indicator

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Neilw:
I've purchased an after market rear indicator and there is no earth. The wiring diagram shows an earth and live.

Can i attach an earth to the position next to the bulb?

Oddjob:
Yes, it’s where Honda attach to when they fit an earth.

McCabe-Thiele (Ted):
I would attach an earth wire even though some modern lights use a conductive plastic  paint/ layer instead.

My old Vauxhall Carlton used to blow bulbs regularly, the poor contact on the reflector would make bulbs blacken after a few months. I ended up putting an earth wire on both rear lamps to fix the issue.

Bryanj:
The earth is actually through the casing, the mount and to frame

Neilw:

--- Quote from: Bryanj on April 30, 2026, 11:23:20 PM ---The earth is actually through the casing, the mount and to frame

--- End quote ---

The wiring diagram shows the earth going to a three way earth connector, which is what i was intending to attach it to. I guess eventually it grounds to the frame or engine?

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