jvc kw-avx830

OK guys, so here's the dilema! Bought my new HU (JVC KW-AVX830), went to buy the normal $6 wire harness, then bam! Supposedly you can't go with a generic one, because the dash lights, security system, etc. all have something to do with the HU wiring. So now I have to buy light a $60 harness, but...

Hey guys, new to caraudio.com so I apologize if this is a stupid post. Used to be heavy in the audio scene when I was a bit younger, but kinda fell off for a few years, seeing how I lost my license. But anyway, I'm back and looking to get it right the first time! So I've done a bit of research...