Recommended 7-Way Tester that is Compatible w/ Ram Factory Brake Controllers
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Question:
I have a RAM 2017 3500 with integrated brake controller. I recently have had issues with electric brakes on a fairly new trailer that suddenly stopped working. Before I spend time/money on this trailer, I wanted to test my OEM brake controller. I purchased this model Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End Item # C66NR But upon arrival, and plugging it in.. the brake light simply flashes. How is C73NR different? I ask because I have a different trailer that seems to work okay. I figured having a tester on hand would be handy. But it appears that the C66NR is not compatible with some modern brake controllers? Is C73NR compatible with my truck? Am I going down the right path? Thank you
asked by: Erik
Expert Reply:
I haven't heard of the Curt 7-way tester not working with OEM brake controllers. There was a Tekonsha tester that had problems with Dodge and GM trucks so it is possible.
We have been able to confirm that the Pollak 7-Way to RV Socket LED Circuit Tester item # PK12741 is compatible with Ram factory controllers.
The Curt 7-Way to RV Socket LED Circuit Tester item # C73NR and item # C66NR are the same testers they're just a different color.
There is one thing to note about the use of these testers to check if your brake controller is functioning. You are going to need a friend to help you. Someone needs to be in the cab hitting the manual stop on the brake controller for it to light up on the tester.

Product Page this Question was Asked From
Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Electrical Tools
- Testers
- Circuit Tester
- Tow Function Tester
- CURT
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