by cjgillig » 21 Aug 2014, 15:46
Thanks for the reply, but I actually figured this out last night!
The problem was the cable that plugged into the back of the head unit. The plastic sheathing on the cable wasn't allowing it to engage fully in the head unit. I cut about 3/8" of the plastic sheathing off, and it now works! As an aside, the GVIF cable configuration was left as shipped - the red/yellow wires did not need to be swapped.