LEDs tapped into 7pin=problems

Diver300 said:

The F150 will detect any current above about 10 mA as a trailer. They are made that sensitive because many trailers have LED lights.

You will need to have some sort of amplifier circuit that will take much less than 10 mA, and switch on the lamps. I suggest something like this:-

**broken link removed**

You could wire the inputs up to either the car's tail light or the trailer socket. Either way, you need a power feed, and the module should take so little current that the circuit connected to is not affected.

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Diver300 said:

I would suggest this:-
https://www.etrailer.com/Wiring/Curt/56146.html

Instructions are at **broken link removed**

You should connect the stop input to ground, then just connect as you said. Power from battery (via fuse), connect the module wires to the 7 pin wires, and connect your LED lights to the 4 pin socket that comes connected to the module. You might end up cutting off the 4 pin socket and wiring direct.

You could wire that same module to the car's tail lights instead. If your car has separate stop lights, you will need to connect the stop input of the module to them if your extra LED lights are to come on as stop lights as well as turn signals.

Click to expand...