Thursday, December 17, 2009

Rear Turn Signal Troubleshooting

Although all bulbs were working properly when I first bought the car, soon after I had driven it home, both a rear side marker and rear turn signal went out. The rear side marker was a quick fix with a new bulb from Advance Auto but the rear turn signal was a different story.

I replaced the bulb in the rear turn signal and it still didn't work which probably meant one of two things, either the electrical system had a short to the turn signal or there could be a faulty wire or connection. I cleaned all connectors and connections with a wire brush and some fine grit sand paper and got no results.

So finally, I took out my Multimeter and tested each connection that went to the turn signal. You're checking for resistance when looking for a short which means a reading of more than 0.9 constitutes a short.

Turns out there was a short in the wire to the turn signal all the way up to the main connector. The problem is that nobody sells just the connectors with wires anymore so I was going to have to find a second hand one somewhere. I searched all over the place and finally got a response from Ian at If you need parts, have any problems or questions with your 944 you can ask them, they know everything over there.

He said he had a working bulb assembly that he would send to me for free and no shipping charge! It's a very rare thing that someone gives you anything for free these days so thanks a lot Ian. Even better, when I got the part in the mail he included all working bulbs and the case assembly for the tail light.

It was a quick installation and now it will pass inspection. Out with the old and in with the new(er).


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