Availability Of Single Roadmaster Diode

Updated 04/13/2026 | Published 04/02/2026

Question:

I installed one of your flat tow wiring kits years ago in my 2022 Chevy Colorado, one of my tail lights will not work with breaking or signal, running light portion works fine. I have traced out everything and all wiring looks good. I believe one of the diode’s is bad. Is it possible to purchase just a replacement diode?

asked by: Roy E

Expert Reply:

Hey Roy, thanks for reaching out. Yes, you can get just a single diode by itself. I have heard of them going bad but it's definitely not common. Sounds like you've done the proper testing and narrowed it down though. Here is what you'll need:

- Roadmaster Hy-Power Diode - (Qty 1) # RM-790

expert reply by: Jesse M