Recommended 7-Way to RV Socket LED Circuit Tester
Updated 01/19/2026 | Published 08/13/2024
Question:
We currently dont have the constant hot going to our trailers 7way - Before running a new wire, do you have any idea where the fuse location would be ? Vehicle is a 2014 Chevy 3500 CrewCab. And should this tester work fine with this truck ? C73NR Thanks
asked by: Dan C
Expert Reply:
Hey Dan! Yes, the Curt 7-Way to RV Socket LED Circuit Tester item # C73NR will definitely work with your 2014 Chevy Silverado 3500's 7-way connector. The color coded LED's will induct which functions are working.
I do not know off the top of my head which fuse that is but the location of it can be found either in your truck's owner's manual or on the diagram printed underneath the cover of your Silverado's fuse boxes.
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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Jerred H.
1/19/2026
Hey Dan, were you able to find the fuse location for the constant hot on your Silverado 3500? It’d be great to hear if the Curt 7-way tester helped confirm everything was working. Your update could make it easier for others checking their trailer connections.