What Size Wire For Electric Trailer Brakes When Re-Wiring Trailer
Updated 12/15/2025 | Published 11/12/2024
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Question:
I’m re-wiring my 18 foot trailer with 5200 lb axles with electric brakes. What size wire would I need to get
asked by: Bruce M
0
Expert Reply:
Hi Bruce,
Generally with electric trailer brakes, the wiring we recommend is 10 gauge, the Deka Jacketed 2 Wire, 10 Gauge Brake Wire # 10-2-1.
However, for since it's just an 18 foot trailer, 12 gauge is certainly acceptable as well, the Jacketed 2 Wire (Brake Wire) - 12 Gauge # 12-2-1.
Keep in mind this is sold by the foot; I also recommend heat shrink butt connectors # DW05745-10.
expert reply by:
Kyle S
0
Product Page this Question was Asked From
12 Gauge 2 Conductor Jacketed (Brake) Wire Per Foot
- Wiring
- Wire
- Jacketed Wire
- 2 Wire
- 12 Gauge
- Deka
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Bud M.
12/15/2025
Hey Bruce, how did the re-wiring go on your 18-foot trailer with the 5200 lb axles? Did the 10- or 12-gauge wire end up giving you the braking performance you needed? Your update could make it easier for the next person tackling a similar project.