Trailer 7 pin to 7 and 4 pin adapter

[casefarmri]

I have a class A that has a 7 pin plug. I need an adapter that would allow me to connect vehicle which uses 7 pin for brake buddy and a 4 pin that would allow me to use external trailer lights on roof. Because of wiring mod to use brake buddy, 4 pin in back of car at car hitch doesn't let external roof lights light up when motorhome brakes are applied.
Is anything like this possible and is it for sale?

[enblethen]

Hikerdogs: You understand as I do. Changing the receptacle out to provide the 7 pin and a four flat.

[Hikerdogs]

enblethen wrote:
I believe some are not understanding the OP's request.
What I understand, is he wants two feeds to the toad. One uses the seven pin connector and the second for a set of auxilary lights(magnetic or ?) on top of toad.

I'm not sure which posts you're referring to as to not understanding the OP's request. We installed a socket combination similar to the one I linked on our 2001 Winnebago Adventurer. The 7 pin socket powered the lights and electric brakes on our tow dolly. The 4 pin connector powered the magnetic brake/tail lights we put on the trunk of the car.

[enblethen]

I believe some are not understanding the OP's request.
What I understand, is he wants two feeds to the toad. One uses the seven pin connector and the second for a set of auxilary lights(magnetic or ?) on top of toad.

[Hikerdogs]

Here's a link to a 4 pole and 7 pole socket you can install.
https://www.etrailer.com/Wiring/Curt/C57674.html

The flat 4 pole socket connects the right brake light, right directional light, left brake light, left directional light, and running lights.

Here's a link to the standard trailer connector wiring diagrams.
https://www.etrailer.com/faq-wiring.aspx

[crasster]

Check Ebay too, they have a plethora of adapters. 🙂

[enblethen]

I did not find any adapter that has the capability of using both the 7 pin RV and a flat four at the same time.
What I showed was a replacement receptacle that accomplishes it.

[bob_nestor]

Picked mine up at Northern Tool. 7-pin round to 4=pin flat

[wa8yxm]

Many RV stores have it.. So do some auto departments and parts stores

U-Haul Hitch World will have it.. IN STOCK at least every one I've seen, Some U-Haul stgores (NON Hitch World) will also have it.

[Mooshaker]

I needed a 7 prong plug to a 4 prong round. Could not find it, Only could find 7 to 4 flat, I cut off the 4 round and replaced it with a 7 prong male plug. Problem solved. Works great.

[casefarmri]

Thanks enblethen.
I looked these over and not quite what I had in mind. They dont look like they will fit directly into a 7 pin RV socket. I may be wrong but male side doesnt look likeit would sty in with RV lid holding down. If you are familiar with just "adapter", that has a rv style 7 pin and a 4 pin extension or feed off let me know.
But thnks for quick repy

[enblethen]

Hopkins make several part numbers 48470, 40955, or 40975
Hopkins