Already did an engine swap, and have since redone most everything save sub frame bushings, cv-axles, and a couple other bushings.

so it is confirmed that this is the antenna wire. as i thought. however, the one the picture (TBO's) is currently installed on the radio. However, the wire that I have posted as a picture is to the antenna switch to make it go up and down, not to give stereo reception.

i need to know where the wire i posted goes to. but it's likely i'll just trace the wire from the physical antenna.