I am having more troubles with my install than I had hoped. I finally got the GPS signal straight. There must be something in my dash that the GPS antenna doesn't like because when I mount it above my rearview mirror, I received GPS signal 99% of the time as compared to 9% of the time.
The hopefully last challenge has been the am/fm reception. I thought I saw a post earlier that for a 2004 4runner without JBL, this wouldn't be an issue. On mine, it is an issue. I tried both Pete's approach in his instructions and OEM revised approach. (tap and connect grey and black wires from 10=pin plug that was originally in the factory head that is now attached to the jumper harness)
Any suggestions would be greatly appreciated.