How To Attach A Trailer Wire Harness To A Trailer Hitch
Updated 12/22/2025 | Published 10/23/2024
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Question:
How can you attach a wire harness to this particular unit
asked by: Clifford S
Expert Reply:
Hey Clifford,
To attach a trailer wire harness to the etrailer Trailer Hitch Receiver # e45AR you'll need a no-drill mounting bracket # 18140 (short) or # 18136 (long) to wrap around the crosstube of the hitch and a bracket # 18144 (4-pole) or # PK12711U (7-pole) to mount your wire harness connector.
Looking at how the # e45AR sits on a 2006 Lexus GX 470 you could probably go with the short # 18140 if you have a 4-pole connector and place it on the top of the hitch. If you have a 7-pole connector you'll likely need the long bracket # 18136 to get enough clearance to have the bracket at the top.
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on Trailer Hitch
Kate F.
12/22/2025
Hey Clifford, how did the wiring setup go with your hitch and connector brackets? Your update could make it easier for others figuring out which bracket length gives the best clearance on a GX 470.