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Old 08-07-2020, 12:16 AM   #1
cwcarpenter98
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Stumped by some trailer lights

So I put a trailer hitch and wiring harness on my 95 Dodge Dakota this week. Went to test it last night, and ended up having all the lights work except for the blinkers. When using the turn signals on the left or right, the truck and trailer will both blink very fast. Without the trailer hooked up, the turn signals work fine on the Dakota. Tail lights, brake lights, and emergency flashers work as intended when the trailer is hooked up.

I already tried a heavy duty flasher, but that didn't fix it, and I'm getting the correct voltage at the truck side of the trailer connector. I also cleaned the ground on the trailer and the mounting points for the trailer lights. The wiring harness I got for my truck is a plug and play harness.

The weird thing is that the trailer works just fine when hooked up to my dad's 02 Silverado 1500HD. I haven't tried hooking the trailer up to my 63 yet.

I am plain stumped at this point
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Christian Carpenter

1963 C10 - Frankentruck 283, 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer - Half-Wit

1981 C10 - Penny 305, th350

1995 Dodge Dakota Sport

"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson
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Old 08-07-2020, 04:37 PM   #2
Wrenchbender Ret
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Re: Stumped by some trailer lights

The turn signals & emergency flashers have different flashers. You probably replaced the emergency flasher instead of the TSF.
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Old 08-07-2020, 11:18 PM   #3
cwcarpenter98
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Re: Stumped by some trailer lights

Well, after a heck of a time, I finally figured it out. From the factory, my Dakota has 6 turn signal bulbs. 4 in the front turn signals and 2 in the brake lights. The "HD" flasher I bought that was supposed to work didn't work, so for grins and giggles, I decided to stick the hazard flasher in the turn signal spot. Guess what, the turn signals work great now with the trailer hooked up.

Once I got that figured out, I looked up the part number for that factory hazard flasher and the description says it's also for the towing package equipped trucks. I just need to grab another factory flasher and I'll be good to go!
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Christian Carpenter

1963 C10 - Frankentruck 283, 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer - Half-Wit

1981 C10 - Penny 305, th350

1995 Dodge Dakota Sport

"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson
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Old 08-09-2020, 12:08 AM   #4
cwcarpenter98
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Re: Stumped by some trailer lights

And, I'm back to square one. Putting 2 of the hazard flashers in made none of the turn signals or flashers work right. Oh well, at least I tried
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Christian Carpenter

1963 C10 - Frankentruck 283, 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer - Half-Wit

1981 C10 - Penny 305, th350

1995 Dodge Dakota Sport

"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson
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