Adapting A 4-Prong Wiring Harness On A 1985 Chevy G30 Van
Updated 08/12/2026 | Published 08/09/2026
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Question:
Im looking for an adapter to fit my 85 Chevy g30 van harness. Which is four prong to my newer style four prong on my trailer
asked by: Mark R
Expert Reply:
Hi Mark!
I must admit to not knowing exactly what you are referring to, but the Custer 4-Way Round to 4-Way Flat # ADP001 may be what you are looking for. To my knowledge, the standard 4-Flat used today was the same as what was used in the 80s, but there were instances where the 4-Round was also used.
If that's not what you are needing though, I would swap out whatever you have on your van to the Curt 4-Way Flat Trailer Connector # C58044. This would give you the standard 4-Flat and will solve all your issues. It does need to be hardwired, but it's pretty easy to do.
What kind of trailer are you pulling?
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Product Page this Question was Asked From
Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat
- Custom Fit Vehicle Wiring
- Wiring Adapters
- Universal Fit
- 4 Round to 4 Flat
- Plug and Lead
- Custer
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