Trailer running lights?

[SmokeyMcBlazer]

I thought I had a problem with a connection between my trailers and the round connector that fits into my trailer electrical plug but I tried the trailer on my dads silverado this morning and everything works fine. When pluged into my TB, I get signals, brake lights, and 4 way flashers. I don't get the running lights tho. I haven't climbed under to check for corrosion on the TB's plug yet but I was hoping that some one could tell me which pin on the TB is gonna be for the trailer running lights? Gotta break out the multi meter and try to figure this out.

Thanks in advance

 

[Team Dougherty]

Check the running light Fuse under the back seat. #42

 

[The_Roadie]

The pinout of the trailer connector is an industry-standard 7-pin. Easy to locate pictures of it by searching for "Bargman trailer connector".

But I agree it's almost always the secret fuse.

 

[SmokeyMcBlazer]

Thanks guys, would that fuse kill the trucks running lights too? Cuz mine are working fine

 

[The_Roadie]

The trailer lights (running, brake, AND turn signals) all have separate fuses for the trailer circuit so the truck's lights won't be affected by damaged trailer wiring. That happens so often I can't keep track.

 

[SmokeyMcBlazer]

Thanks again bro. I appreciate your help!

 

[The_Roadie]

I do it all to get you guys to click the "like" button. I work cheap.

 

[SmokeyMcBlazer]

Lol, I'd like it twice if that didn't unlike it!!

 

[Instrumental]

I found serious corrosion on the ground connector in the assembly on the vehicle, had to do a little disassembly but it was pretty painless. No cutting of wires required, I was able to clean and reassemble. Clearly the ground isn't your issue, but one of the other connections could be.

 

[Instrumental]

Here's my thread on the subject.

http://gmtnation.com/f73/bad-ground-tow-harness-7315/

 

[muddy tires]

On mine, the pin descriptions were listed on the flap cover of my 7-pin recepticle. It gives a handy reference.

 

[The_Roadie]

The Owner's Manual is a wealth of knowledge too, but I get sick of repeating that boring fact. Trailer fuses are listed with useful descriptions, a rarity in GM manuals.

View attachment 30357

 

[rcam81]

I kept having corrosion problems with my vehicle recepticle due to michigan winters. I took it apart and put bulb grease on all the internal connections. Haven't had a problem for 3 years now.

 

[6716]

http://gmtnation.com/f73/trailer-tail-lights-no-workie-but-turn-signals-brake-lights-do-7333/

Had the same problem, discussed in that thread.

Bottom line: one of the pins between the two plastic bits was bent and not making contact, which I only found when I took it all apart. It was the pin that would have connected the running lights.

 

[SmokeyMcBlazer]

Check the running light Fuse under the back seat. #42

checked the fuse and sure enough, blown! don't have any fuses to replace with yet but I'm hoping that theres not a short somewhere that'll just blow the replacement.

thanks again to all who responded.

 

[SmokeyMcBlazer]

just wanted to follow up, used the trailer today and all is good. running lights worked fine and the fuse didn't blow again.

thanks again for the help peeps!

 

[The_Roadie]

Don't despair at not locating the short that blew the fuse. It WILL come back, on a dark and stormy night when you're least prepared to troubleshoot it.

 

[SmokeyMcBlazer]

Don't despair at not locating the short that blew the fuse. It WILL come back, on a dark and stormy night when you're least prepared to troubleshoot it.

And that good sir, is how I like to live. Dangerously! lol