Towing Electrical TROUBLES

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Dec 2, 2015 | 04:38 PM

#16

RV_Tech

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From: Bristol, TN.

Power to the lead for the marker lights in the J box on the trailer?

Dec 2, 2015 | 04:54 PM

#17

bigredtruckmi

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From: Huntington Indiana

Do you have power at the plug on truck for markers?

Dec 2, 2015 | 05:13 PM

#18

streetglide11

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Quote:

Originally Posted by bigredtruckmi

Do you have power at the plug on truck for markers?

Not sure about that

Dec 2, 2015 | 05:18 PM

#19

RV_Tech

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From: Bristol, TN.

So, you have not verified power to the back of the truck?

Dec 2, 2015 | 05:28 PM

#20

streetglide11

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Quote:

Originally Posted by RV_Tech

So, you have not verified power to the back of the truck?

Yes, there is power. The trailer brake lights and turn signals work.

Dec 2, 2015 | 06:19 PM

#21

RV_Tech

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From: Bristol, TN.

I understand that. I mean did you verify power at the pin on the truck for the markers. That is the first step in determining whether that problem is truck or trailer based.

Dec 2, 2015 | 07:14 PM

#22

bigredtruckmi

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From: Huntington Indiana

There could be a wire pulled off the plug or,somewhere on the truck, this is what we are wondering.

Dec 2, 2015 | 07:23 PM

#23

streetglide11

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Quote:

Originally Posted by bigredtruckmi

There could be a wire pulled off the plug or,somewhere on the truck, this is what we are wondering.

Oh, my mistake. I have not tested the pin(s). That is priority first thing in morning. I appreciate each of your information and time. I will submit my findings tomorrow.

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Dec 3, 2015 | 03:50 PM

#24

streetglide11

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Quote:

Originally Posted by streetglide11

I have a 2011 F150 and pull utility trailer. I just installed LED lights with complete new wiring. Brake lights, turn signals and flashers work, but running/tail lights do not. I checked fuses and made sure connectors are clean. No success. Any ideas?

I checked pins on truck today and found no power for running lights.

Dec 3, 2015 | 03:58 PM

#25

bigredtruckmi

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From: Huntington Indiana

Now to find the problem. I hate chasing wiring. First check the fuses. Get owners manual out and find appropriate fuse. Check both sides of fuse with tester to be sure fuse doesn't have a hidden blow.

Dec 3, 2015 | 04:07 PM

#26

streetglide11

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I pulled all trailering associated fuses and found none blown. However, I did not check with tester.

Dec 3, 2015 | 04:10 PM

#27

bigredtruckmi

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From: Huntington Indiana

I've seen fuses that look good. But put a load on it and it fails.

Dec 3, 2015 | 05:53 PM

#28

RV_Tech

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From: Bristol, TN.

I also always use a my meter to check fuses. If the fuses are good, check the connections on the back side of the seven pin on the truck. Wire breaks are less common unless someone has been missing with them.

Steve