4-Way to 7-Way Trailer Connector Adapter for a 2012 Toyota Tundra

Expert Reply:

If trailer brakes are not required and you do not plan on getting a brake controller any time soon, you can just use # 37185. Plug the 4-Way into this adapter, ground the white wire and you will be able to plug in the 7-Way and you will have ONLY lighting functions.

If the trailer requires a 12 volt circuit, trailer brakes, auxiliary power, or reverse lights they will not function. If you decide that you do want all of those features in the future. You would need the follow items to complete the installation:

25 feet of # 10-2-1 wire
A 40 amp circuit breaker, # PK54540
A 20 amp circuit breaker, # PK54520 OR a 30 amp circuit breaker, # PK54530
Assorted ring terminals, butt connectors, quick splice connectors, and wire ties

We do have a kit that offers all of these items, # ETBC7, if you just wanted to get everything ahead of time and just install the adapter for now.

And, if you decide on a brake controller, I recommend # 90885 because it is our most popular model for its ease of use.

I have also included a couple of links that will help with installation.

expert reply by: Michael H