Nissan Repair Questions? Ask a Mechanic for Answers ASAP
I apologize for the delay, here is the wiring diagram so we can get started later today when your ready.
let me know a good time for you please.
ok, I admit I am a little confused here.
Most factory tow packages incorporate the 7 pin plug at the hitch. Why are you using an adapter for the trailer if they are both 7 pin? are you sating that your hitch only has a 4 pin set-up?
The reason I am asking this is because a factory 4 pin set-up does not provide trailer brake function or aux power so if this is a travel trailer that could be a safety issue and power issue.
4 to 7 pin adapters are created to be used from a 7 pin to down-convert and use a 4 pin trailer, not vice versa.
so if the trailer lights work properly at your 4 pin connector now (all you need is a test light to verify tails, turns, ground)
assuming they are working properly the problem is at your camper harness or the camper fuse panel (usually inside the camper by the entry somewhere)