I just received the new harness and bracket from Maxspeed free of charge. If you have already gotten the EVO kit with older harness, contact Sales@gorotax.com, provide engine serial number, and shipping address, and they will send it to you free of charge. I haven’t tested it yet, but the new harness and bracket is much better thought out.
On the advice on someone here, I emailed firstname.lastname@example.org and they sent me a form. About a month later they sent me an upgrade to the troublesome upgrade. They had my info in their database, not sure if I would of been contacted, so I am glad I reached out.
Not sure if the new bracket will work on my iKart due to interference issues. Won’t know for sure until I get around to installing it. This entire process has been a bit of a challenge. Took a 1/3 of a season to get the kit to work correctly. At least is does seem to make the motor perform better (At least in high Engine RPM Range). Low to mid end, I think it actually hurts, so the net on the stop watch is marginially positive.