Solution for Connecting Female 4-Way on Tow Vehicle to Female 7-Way on Trailer

Question:

I just installed this and discovered that a used pop-up camper I bought has a *female* 7 pin blade connector. This T-One connector I installed is 4 flat *female* connector. Are there any adapters available for 4 flat *male* to 7 blade *male*??

asked by: Eric

Expert Reply:

There isn't an adapter available that will connect the female 4-Way on your tow vehicle to a female 7-Way on the trailer. Typically the trailer end will have the male-end connector so really your best option is going to be to cut off the 7-Way female on the trailer and replace it with a new male 7-Way like the Pollak # PK12706. I have attached a diagram to assist.

This is going to work well for your current tow vehicle but will also help you to connect to future vehicles or others that might pull the camper as any other vehicle would also be equipped with a female connector.

Then with the new 7-Way in place you can use a standard 4-Way to 7-Way adapter like the Hopkins # 37185. This will plug right into the 4-Way on your tow vehicle to provide you with a 7-Way at the other end to connect to the new male 7-Way on the trailer. If you only need to power the trailer's signal lights then the additional white wire coming from the adapter needs to be grounded to a bare metal surface but the remaining black, blue, and purple wires can just be tied off as they aren't needed.

expert reply by: Chris R