Guys - I'm seeing only post about people getting wire taps. I wanted to let you know the moment I got my Hummer EV I emailed the guys over at Gen5DIY who specializes in this stuff and asked if they had a direct plug and play with OEM connectors for the Hummer EV, like they had for my Sierra and Camaro, and even though they didn't have the product listed on their website (looks like they still don't), they had one ready or made it on demand! Emailed me an invoice to pay and it was shipped next day. It was for my RJ powered Cobra Radar/Cam combo.
Edit: the harness plugs directly into your rain sensor harness behind the rear mirror cover.
Edit: the harness plugs directly into your rain sensor harness behind the rear mirror cover.