Quote:
Originally Posted by TonyD2
Morning' all. Just a bit of confusion here on my part. I have a '99 Silverado Z71 and have the round 7 pin plug on the hitch.[all factory by the way] The wife and I are very seriously looking at a medium travel trailer. With that being said, there is a extra wiring harness under the seat with an in line 30 amp fuse. Owners manual no help at all on where to plug this in. Can anyone guide me as to hook up and what else I may need to do? Brake controller etc. Thanks in advance for any help.
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No idea what the extra harness is ... maybe something from previous owner for radio amp or such?
Since you have the factory 7 pin plug at back your good. Brake controller in cab is all you'll need & also tell them you need harness for '99 truck.
This will plug into empty port on elec box down there on firewall by emerg brake & wire that to back of brake controller.