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Bear25314's avatar
Bear25314
Explorer
Aug 14, 2016

After replacing truck lights with LED's, TT lights act weird

I have a 2011 F250. I replaced all the marker light bulbs with LED's. Now, when I attach my TT, the marker lights on the TT act differently. The brake lights work fine, however, when I turn on a bl...
beemerphile1's avatar
beemerphile1
Explorer
Aug 15, 2016
Gdetrailer wrote:
beemerphile1 wrote:
I think the LED change is only coincidence, you have a bad ground in the trailer.

Try again.

OP HAS a 2011 F150 Ford Truck..

Ford for MANY years (at least back to 1997 uses RELAYS for the trailer lights.

NOTHING on that trailer wiring should affect how the truck lights work or operate....


The OP said;
Bear25314 wrote:
...when I attach my TT, the marker lights on the TT act differently.....

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