Supraforums -1987+ Radio wiring diagram - Welcome to our blog and we hope you will enjoy it very much. Guys, what are you looking for is here. You can also download it below. But I think it will be better if you read the review of Supraforums -1987+ Radio wiring diagram
The black on the toyota in-dash wiring is NOT chassis ground. it is one of the terminals for the rear speaker, the other terminal being YELLOW. the Chassis ground on the toyotain-dash wiring is BROWN. this ground wire terminates at the 10mm bolt behind the shifter under the center console! connect the Black radio ground of theaftermarket repair harness to this Brown wire. I verified this w/ myDVM. the BLACK wire in the dash has NO continuity the this chassis ground. however, the brown wire DOES. less than 1.0 ohm resistance too. http://cygnusx1. net/supra/library/Wiring/pages/Page_134.html ifyou connect your Reverse/repair wiring harness (Scosche PN TA02RB) to the Blackwire for radio ground, you WILL damage something. I am currently repairing my hacked wiring w/ the dash out of the car , and alt+Tab’ing between the TEWD and This diagram. EDIT; found outsomething else too. Toyota conn A, pins 8 and 9 (Scosche TA02RB, pins Hand I) for power antenna and Remote Amp turn-on. Toyota colors: Pin8: Black/Red Pin 9: Pink/Blue.
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