I was going to have the geek squad do it but the wait time is several weeks for an installation and hopefully I might save 99 bucks.

my H3 currently has factory radio, but had another aftermarket radio, so it still has camera
wired. They sold me the harness at Best Buy, I need to have dvds playing, what else would I need? Is there a manual or video to watch?

many thanks

 

We need to know which radio you have in your H3, Monsoon or No. With an adapter, just follow the instructions.

With Monsoon I would use Crux SOCGM-17C -

I would never let the Geek Squad kids do anything on any of my vehicles.

 

I believe I have the original factory radio, how do I confirm it’s Monsoon? Wow the Crux you suggest is 2.5
less what they charged me. I’m returning it. Thank you

 

Monsoon-equipped H3's have an 8" subwoofer in the cargo area, behind a panel on the driver's side:

 

Take your stereo to one of your local 'car stereo installer shops', they installed the rear camera and the stereo for me in less than an hour.

 

Yes it has a subwoofer - confirmed