Installing a 7-Way Trailer Connector on a Vehicle That has an Existing 4-Way Connector

Question:

Hi there Im trying to find a connector for my trailer but I cant find it anywhere. My trailer as a 7 way round plug and my truck as a 4 way flat outlet. Do you guys have any adaptor?? I only find the other way around

asked by: Francesco

Expert Reply:

To know for sure what we have available for you I'll need to know the year, make, and model of your truck. There may be a custom fit 7-way wiring harness available.

If there isn't you can always use our # ETBC7 kit to convert your existing 4-way connector to a 7-way. The kit includes the 7-way and all of the wiring to install it, including the wiring to install an electric brake controller to power brakes on your trailer, if it has them.

If the trailer does have electric brakes I recommend the Prodigy P3 # 90195 for a brake controller. It's one of the best on the market because of it's reliability and ease of use. There may also be a custom adapter to install a brake controller in your truck so again, let me know the year make and model.

If you don't need the additional functions of the 7-way to be active then you can just use a 4-way to 7-way adapter like the Hopkins # 37185. The extra wires can be capped off.

I've linked some articles and videos that you may also find helpful.