this post was submitted on 28 Jul 2026
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Trying to figure out where I am losing voltage for rear right blinker on a C3 II.

Connectors on the light module are OK, I tried on the left side, compared with a multimeter and I should get a pulsing Voltage (12V if I recall) but the gray one stays at 0 on the right side.

So I followed the wire all the way to under the glove box where I found what looks like a burned resistor.

Edit: it's a plastic shielding:

I'm pretty new to this so if I'm looking at the wrong things please feel free to tell.

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[–] BandanaBug@piefed.social 4 points 15 hours ago (1 children)

I don't think someone would bother with the tape so my gut says it's factory. What happens if you measure the resistance over that resistor?

[–] ViscloReader@lemmy.world 2 points 13 hours ago (2 children)

I removed the tape and it's not a resistor, it's some kind of shielding...

Don't really know where to go nextπŸ€”

How would one go about to find a voltage drop (if that is even what it's called)

[–] Madison420@lemmy.world 2 points 5 hours ago* (last edited 5 hours ago)

Looks like a gm factory splice of the 80-00 vintage. If one wire goes in and more than one comes out it is a factory splice with a naked terminal.

If it's melty looking you probably have a short downstream from there towards the signal connector.

[–] Successful_Try543@feddit.org 1 points 6 hours ago

Do you measure 12 V at the origin of that cable, e.g. at the fuse box or relay?