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Metra recommends making connections as shown below; Strip, Splice, Solder, Tape. Isolate and individually tape off ends of any unused wires to prevent electrical short circuit. METRA / EIA WIRING CODE 12V Ignition / Acc. . . Red Right Front (+). . . . . Gray 12V Batt / Memory. . Yellow Right Front (-)... .. .Gray / Black Ground.......... . Black* Left Front (+). . . . . . White Power Antenna.... . Blue Left Front (-). . . . . . . White / Black Amp Turn-On..... . Blue / White Right Rear (+)