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Old 04-15-2014, 06:09 AM
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DanEC DanEC is offline
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Location: Central, AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
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Originally Posted by patrickt View Post
Dan, if you disconnect your trailer relay on the 3-wire "car side," and then turn the car on, and touch the brakes, the RED wire should have a 12v continuous. Take your foot off the brake and put on the left turn signal. The front left light bulb should be flashing and you should get a pulsing 12v at the YELLOW wire. Put the right turn signal on and the right front bulb should now be flashing and you should get a pulsing 12v at the GREEN wire. If this doesn't happen, then there is a problem upstream from your trailer relay -- either a wiring fault or the turn signal switch is bad, or maybe something else. But that's your first diagnostic test. If you can't pass this test, then there's no point in actually removing the trailer relay.
OK - I'll give that a try first but I went ahead and ordered a relay from Summit. I think it was only a little more than $8.

Thanks Patrick and Kevin
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