No power for trailer stop lamps/turn signals at 7 pin connector

[iceman302]

- Friend borrows car trailer
- Friend damages trailer 7 pin plug
- Friend replaces 7 pin plug
- Friend ***** up wiring
- ****** up wiring blows fuse or relay?????
- Raptor has now power at 7 pin connector
- Trailer has no stop lamps/turn signals
- Owner takes trailer to repair shop
- Repair shop fixes trailer wiring, confirms proper function
- Owner replaces both TT stop lamp/turn signal relays (37,38) under hood
- Raptor still has no power at 7 pin connector
- Owner gets more pissed off at stupid friend
- Owner searches manual for another possible fuse or relay
- Owner can't find shit in manual
- Owner seeks help from Raptor brethren

 

[iceman302]

I found the smoking gun. There's a 20 amp relay/fuse (73) that provides power to the 2 stop lamp/turn signal relays. Its clearly blown. Now I just have to find a dealer that has one in stock. Wish me luck!

 

[PEZ]

Thanks, I'll have to check this fuse. I might have the same problem. The truck brake and turn signals work perfectly. But once I hook up my new trailer with 7 pin, the trailer brake and turn signals don't work. I don't know if it's my truck or the trailer.

 

[HoustonRider]

the fuse sometimes isn't installed at the dealer. Mine was in the glove box....

the fuse is in the fuse box under the hood right up front on top of the radiator.

 

[iceman302]

Thanks, I'll have to check this fuse. I might have the same problem. The truck brake and turn signals work perfectly. But once I hook up my new trailer with 7 pin, the trailer brake and turn signals don't work. I don't know if it's my truck or the trailer.

Mine was triggered by the fouled up wiring on the trailer so it could be both. Replacing the #73 fuse cured the problem. You need to check and see if you have power at the 7 pin plug on the truck.

 

[Phyguy]

the fuse sometimes isn't installed at the dealer. Mine was in the glove box....

the fuse is in the fuse box under the hood right up front on top of the radiator.

Bingo. I found my fuses today stuffed in the storage bin under the back seat. I just use teh four pin connector for my boat and skis, but glad to know where it is now. Looks like they supplied a couple extra fuses as well in a ziplock'type bag.