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Solution to Add 4-Way to 2001 Ram with 7-Way  

Updated 04/23/2025 | Published 04/14/2025

Question:

my 2001 ram has both 4 pin and 7 blade plugs, but you can not use both of them at the same time due to the covers not opening at the same time. I want to pull my camper 7 blade and my fishing boat 4 pin behind the camper and use both plugs. any product info would be great.

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Expert Reply:

Hey Charles, the easiest solution would be the Curt part # C55384. This plugs inline with your 7-way and gives you a 4-way on a wiring harness independent of the 7-way socket so it wouldn't get affected if your 7-way was open.

expert reply by:
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Jameson C
Charles profile picture

Charles

4/21/2025

On the advice of one of your co-workers I purchased HM 40920. "While it was a plug and play" all the videos showed it being installed on Chevy products, and ask before I ordered that it would fit my 2021 RAM. It will work for now, but if this item is available for a ram that would be nice.

Jameson C. profile picture
Etrailer Expert

Jameson C.

4/21/2025

@Charles The # HM40920 is a 7-way designed to fit the twist lock sockets that GM vehicles normally have. Is that the issue you are having is that it can't connect to your bumper?
Charles profile picture

Charles

4/23/2025

@JamesonC Yes the plug wiring part works fine but not enough room to twist lock on a 2021 ram. The concept is great. It allows me to plug both my camper and piggy back my fishing boat into the truck directly.
Jameson C. profile picture
Etrailer Expert

Jameson C.

4/23/2025

@Charles The part # HM40950 is similar and has a 4 bolt mounting pattern instead of the twist lock so it might be able to attach to what you have better. It also has the 4-way attached to it as well.
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