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Old Oct 27, 2011 | 06:32 PM
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From: Suffolk Virginia
Default Radio Install

Hey guys,
I'm having trouble getting my new radio to power up. Last night I removed the old radio (at least 20 years old) to replace with a JVC I had laying around. It would not power up so I figured it was busted, so I went out and bought a Sony today. That one doesn't work either. I took the original radio and rehooked the wires (red yellow black) and it plays. Is there something different about the new radios? Any advice would be appreciated.
- Jay
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Old Oct 27, 2011 | 06:37 PM
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From: CORVETTE 77 385 C.I. TEXAS
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Originally Posted by psycho dad
.... Is there something different about the new radios? Any advice would be appreciated.
- Jay
A memory wire to constant power in addition to the power wire.
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Old Oct 27, 2011 | 06:44 PM
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Hello Jay. On my '77 the original radio used a Black-ground, Gray-dash lighting and Yellow-switched power wire. Most modern radios use a Black-ground, Orange or Yellow-hot at all times to power clock and memory and Red-switched power. It sounds like you are not getting power from the yellow to the red. Your '76 may be different. Post back and we will figure it out. mike...

Last edited by mds3013; Oct 27, 2011 at 07:31 PM. Reason: Switched wires colors
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Old Oct 27, 2011 | 06:49 PM
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okay, I just hooked to yellow & red wires from the radio together and connected to the red lead and it powered up. So... I guess there is no power at the yellow lead?
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Old Oct 27, 2011 | 06:57 PM
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From: CORVETTE 77 385 C.I. TEXAS
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You can connect memory wire to cig. lighter orange.
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Old Oct 27, 2011 | 07:29 PM
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That's a good idea Ganey. My lighter doesn't work so I'm not sure if there's power there
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Old Oct 27, 2011 | 07:33 PM
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A 12v test light is a good investment for those of us that own a C3. I corrected my earlier post. Red should be switched power. mike...
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