Trailer Lights Wiring
From Free Knowledge Base- The DUCK Project: information for everyone
4-Way Connector
PIN #1 - covered in plastic on trailer end - (female) -- Ground --------------- sometimes white PIN #2 - exposed metal on trailer end ------ (male) ---- Tail Lights ---------- sometimes brown, black PIN #3 - exposed metal on trailer end ------ (male) ---- Left Turn & Brakes --- sometimes yellow PIN #4 - exposed metal on trailer end ------ (male) ---- Right Turn & Brakes -- sometimes green
see: https://bullyusa.com/how-to-wire-trailer-lights-wiring-instructions.html
