Trailer Brake and Turn Signals Not Working When 7-Way Connector Plugged into 2011 Ford F-150
Question:
Have a brand new trailer with 7 pin connector. all lights work when connected to my 2011 f150. took trailer to friends house hooked up his 2011 f-150 and all trailer lights work except the turn/hazard and brake lights. hooked back up to my truck and works. both trucks have had the relay aand fuse installed for the trailer internal power and electric brake charger.
asked by: Bob D
Expert Reply:
I would recommend checking the fuse box in your friends F-150 to make sure it has the fuses/relays installed for the trailer stop and turn lights. I looked up a fuse box diagram for a 2011 F-150 and it looked like the trailer tow left stop/turn relay is at location 37 and the trailer tow right stop/turn relay is at location 38. You will want to check the legend in the fuse box of your friend's vehicle to make sure those are the correct locations.
I would also recommend using a circuit tester, part # PTW2993, and test the functions of the 7-Way on your truck and test the functions of the 7-Way on your friend's truck to make sure that they match.
Products Referenced in This Question
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Plug-N-Tow (R) Vehicle Wiring Harness
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- Hopkins
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Bob
1/15/2013
found it to be fuse 73 is responsible for the turnbrake function replaced and all is good