Hey I am trying to wire breather light on my 2007 379 peterbilt. I have heard people say that most times they are already prewired,but nobody never say the location on where the wires are located at. Please send a picture of where the prewired harness is located at thanks .
Breather lights for peterbilt 379
Discussion in 'Peterbilt Forum' started by AaronHathorn, Jul 12, 2021.