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SportTrac Discussion
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<blockquote data-quote="Duane Foster" data-source="post: 1031128" data-attributes="member: 70985"><p>I had a similar issue with (both I think) my '78 F150 and '94 Explorer. My issue as I remember was that everything worked fine with the headlights off. But with the lights on, the brake lights, taillights, and turn signals wouldn't all work at the same time. Two of the 3 would work together, but not all 3. In both cases I was using an aftermarket direct fit pigtail that plugged into the connector for the factory tail and brake lights, turning the connection into a T. I read somewhere that the problem was due to a ground wire that was needed at the 4 pin connector. I never did fix it, just made sure I was home before dark.</p><p></p><p></p><p></p><p> You shouldn't have that problem with the factory wiring all the way to the 4 pin, but a bad ground is still the place to start.</p></blockquote><p></p>
[QUOTE="Duane Foster, post: 1031128, member: 70985"] I had a similar issue with (both I think) my '78 F150 and '94 Explorer. My issue as I remember was that everything worked fine with the headlights off. But with the lights on, the brake lights, taillights, and turn signals wouldn't all work at the same time. Two of the 3 would work together, but not all 3. In both cases I was using an aftermarket direct fit pigtail that plugged into the connector for the factory tail and brake lights, turning the connection into a T. I read somewhere that the problem was due to a ground wire that was needed at the 4 pin connector. I never did fix it, just made sure I was home before dark. You shouldn't have that problem with the factory wiring all the way to the 4 pin, but a bad ground is still the place to start. [/QUOTE]
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