I also bought a harness from Classic, I'm 99% complete and it was a breeze. All the wires were labeled and they had a direction sheet. It laid out perfectly. I don't know which harness you got, mine was $ 149.00. I had removed the harness prior to installing. Any questions you can pm me,I'm local..Santa Cruz Mtns.
Thanks

1954 Chevy 3100 5-Window
In the Stovebolt Gallery
More pix on Photobucket

"True victory is victory over one's self."
Krav Maga isn't pretty ... but it works just fine.

Jimmi V.