Trailer wiring BS

[luke 8603]

So I bought a plug and play harness tekonsha if I remember correctly all went well except for the one corroded plug truck side. I cut and matched the wires by location and I can either have markers off of the switch or markers when the brakes are applied but no actual brake lights
Please help me figure this one out

 

[luke 8603]

This picture shows the markers off switch
The g/y wire which should be the correct one for this gets markers w brake pedal

 

[ppc]

That's certainly not plug and play. The true plug and play is a Hopkin's or Hoppy. Search using either of those. They both connect inside the rear interior panels by tapping into each rear lamp harness pigtails.

 

[luke 8603]

I had to add the spade connections as the truck end was corroded

 

[luke 8603]

But I seem to have gotten the damn thing working

 

[greentruck]

Assuming those connectors are just crimp on and not soldered, check each one to be certain it is/stays connected. You may have wiggled it to a good connection for now, but it could loosen again.