Can I Use 16 Gauge Wire For Lights That Have 18 Gauge Wire On The Back?
Updated 01/20/2026 | Published 08/13/2024
Question:
Hi...can I safely use a 16ga wiring harness for a trailer and connect it to the lights which have 18ga. coming out of them. It is a basic 4 prong set up with 2 lights in the back and 2 running lights. It is a rewire job on a older easy loader boat trailer...thank you in advance for your response. Derwin
asked by: Derwin E
0
Expert Reply:
Hello Derwin. Yes, you can safely use a 16 gauge wire harness for connecting lights that have 18 gauge wire on the back. A lot of trailers use 16 gauge wire for basic LED or incandescent trailer lighting so this is a common practice.
expert reply by:
Jesse M
0
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Jesse M.
1/19/2026
Hey Derwin, how did the rewire job on your Easy Loader trailer turn out using the 16-gauge harness? Your results could really help others working on similar trailer lighting setups.