New Head Unit Won't Work

cre · 08-08-2007, 06:32 PM

Both antenna wires are just what they appear... antenna wires. The smaller one is for an antenna that's laminated to the rear windshield. The larger one is for the powered antenna.

Check the Radio and Dome fuses. Here's the wiring diagram for the stock radio:
http://www.cygnusx1.net/Supra/Librar...x?S=Main&P=134

And here's the diagram for the stock stereo w/CD player and amp:
http://www.cygnusx1.net/Supra/Librar...x?S=Main&P=132

If you're car has the amp you may need to remove that to get everything working properly, but I'm pretty sure the new head unit should still power up.

08-08-2007, 06:32 PM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Both antenna wires are just what they appear... antenna wires. The smaller one is for an antenna that's laminated to the rear windshield. The larger one is for the powered antenna. Check the Radio and Dome fuses. Here's the wiring diagram for the stock radio: http://www.cygnusx1.net/Supra/Librar...x?S=Main&P=134 And here's the diagram for the stock stereo w/CD player and amp: http://www.cygnusx1.net/Supra/Librar...x?S=Main&P=132 If you're car has the amp you may need to remove that to get everything working properly, but I'm pretty sure the new head unit should still power up.