Jamie Randall

Hello, I have a 97 ES300 that I'm installing a new Pioneer head unit in, since the LCD went out on the original unit. I wanted to keep the rest of the system original, and use the existing amplifier, so I bought the wiring kit to connect it to the new unit with RCA jacks. The unit powers up fine, but the amplifier does not. Apparently, there must be a trigger wire in the original plug that activates the amp. I'd love to connect that wire to the switched output wire from my stereo, but there is no mention anywhere of what that wire looks like. Does anyone have any information about which wire turns on the amplifier?

Hello, Did you ever find out the answer to your dilemma? I have a 97 es300 that I'm installing a new Pioneer head unit, since the lcd went out on the original unit. I wanted to keep the rest of the system original, and use the existing amplifier, so I bought the wiring kit to connect it to the new unit with RCA jacks. The unit powers up fine, but the amplifier does not. Apparently, there must be a trigger wire in the original plug that activates the amp. I'd love to contact that wire to the switched output wire from my stereo, but there is no mention anywhere of what that wire looks like. Any Ideas?