Next, Grey wire. Accessory power. This was the wire that told the radio the key was in the ignition. He found a Grey wire in the dash, but it looked suspicious—too thin. He checked the diagram again. It branched off the ignition switch. He stripped the Grey wire in the dash and touched it.
On many 86120 units, the rear speakers are actually driven by an external factory amplifier (usually under the passenger seat). If you get no sound from the rear, don't blame the 86120 head unit—check the external amp. manual toyota fujitsu ten 86120 wiring diagram
Before proceeding with wiring, it is crucial to correctly identify the unit variant, as the "86120" model number is a series designation, not a specific part number. Next, Grey wire
: Blue ; sends a 12V signal to raise a motorized antenna. He found a Grey wire in the dash,