Recommended 4-Way Wiring Harness for a 2010 BMW X3

Updated 11/12/2023 | Published 11/11/2023

Question:

Need a 4pin trailer harness for a 2010 BMW X3 E83. Please show options. Thank you.

asked by: Mike C

Helpful Expert Reply:

There's two options to add a 4-way wiring harness to your 2010 BMW X3 E83. There is not a custom fit harness that plugs in so both will require testing wires to get them set up. The main difference in the two harnesses is one clamps on without having to cut and splice wires and the other requires splicing. I have listed both options below:

Splicing Wires - Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector item # C59236

Clamp On No Splicing Wires - ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector item # 119250KIT

I have linked a couple of installation videos below so you can see the different methods in which these harnesses install.

expert reply by: Jerred H