Trailer wiring issue. brake light and turn signal don't work with head light on
The brake light and turn signals work when the headlights are off, but when I turn the headlights on, the turn signals and brake light no longer do anything, it just stays lit. Trailer lights are 2 wire, dual filament, and ground to frame.
-2001 Tahoe original 5.3 4x4 only 435k
-Down to 2 three wheelers
-1985 V65 Magna
-1973 CT70 with 125cc motor