Adding 7-Way Connector to 2018 Subaru Forester with Existing 4-Way

Question:

Can I install a 7-Way Trailer connector on a 2018 Subaru Forester? I have a 4-Way now but would like to have a 7-Way. Can the Forester handle a 7-Way connector? I really like the dual connector with both the 7-Way and 4-Way on one piece. I like the idea of the flexibility to be able to connect a trailer with either a 7-Way RV style round connector OR a 4-Way connector.

asked by: Charlie S

Expert Reply:

You can absolutely install a 7-Way connector on your 2018 Subaru Forester that is already equipped with a 4-Way. If you will only need to power the basic signal lights on the trailer that is equipped with a 7-Way then you can use the Hopkins Adapter # 37185. This will plug right into the existing 4-Way on your Forester to provide both a 7-Way and 4-Way on the other end. After attaching the white ground wire to a bare metal surface the additional wires can simply be tied off as they won't be needed.

If however you plan on towing a trailer that is equipped with electric brakes you will instead want to install the Universal Wiring Kit # ETBC7. This kit includes everything needed to convert the existing 4-Way to a fully functional 7-Way (and 4-Way), along with the additional wiring and circuit breakers needed to install a brake controller. I have attached the complete installation instructions that you might find helpful.

Then for a brake controller I highly recommend the Tekonsha Prodigy P3 # 90195. This is a proportional controller that will activate the trailer brakes at the same time and with the same intensity that you apply to them in the Forester. It features an easy-to-read digital display, storable settings, and continuous diagnostics that will alert you to any potential issues.

I have attached a few short video demonstrations on these products as well.

expert reply by: Chris R