7-Way Trailer Connectors Compatible with 8 Gauge Wires for 12V Power and Ground

Updated 09/24/2026 | Published 06/16/2020

Question:

Putting my Lance camper on a 2020 Dodge dually and need 7 blade rv connectors that will handle 8 gauge at the positive and negative positions. Specs dont say gauge ability. Please help. Thank You

asked by: Robert A

Expert Reply:

The Optronics 7-Way Connector - Trailer End # A7WCB will handle 8-gauge wires on the positive and negative connectors. If you want the same gauge wire on the vehicle side, I recommend the Hopkins Endurance 7-Way Trailer Connector Socket - Vehicle End - Ergonomic Design # HM48480.

These connectors don't specify wire gauge but will work with 8-gauge wires on the 12v and Ground pins without issue.

expert reply by: Jason S

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Marco

9/24/2026

Where can I find a 7-way harness that has 8AWG positive and negative wires?

Kate F.

9/24/2026

@Marco If you already have 8 AWG positive and negative wires run for your camper, I would actually use those for a DC-to-DC charger rather than trying to run that heavier charging circuit through a standard 7-way. The Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D is a 25-amp charger and can work with 8 AWG wiring. You will also need the 40-Amp MIDI Fuse Kit # 331-FK40 to properly protect the circuit. This will give your camper battery a dedicated charging circuit while you are driving, while your regular 7-way can continue handling the normal lighting functions. Is that what you are trying to accomplish?

Marco

9/24/2026

@KateF Hi Kate, thank you for the reply. My trailer does have a DC-DC charger, but I'm looking for a clean installation. I don't want to run a separate connection if I don't need to. I know I'm not the only one thinking this, so someone in the industry has got to be working on it.

Kate F.

9/24/2026

@Marco I found out some more information, is this for a Lance Camper? Apparently they need the higher gauge wire, I was told you can get one directly from Lance. It is worth reaching out.