12 or 21 pin radio?
02-01-2009, 07:58 AM
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Car: 85 Iroc-Z
Engine: 383 TPI Procharger D1SC
Transmission: TKO600
Axle/Gears: Strange S60 3.73
12 or 21 pin radio?
I am looking to buy a radio from a 1989 Iroc and I was wondering if it takes the 12 or 21 pin connectors?
02-01-2009, 11:42 AM
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Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: 12 or 21 pin radio?
I'm pretty sure camaro(and most other GM)is 21 pin
from'88 on,though i think some of the trucks such as
astro van and s-10 were 12 pin into the 1990s.If you
don't want to tamper with original 12 pin harness but
want to use a 21 pin radio,i think you could get one of
those wiring adaptor kits meant for aftermarket radios
to plug into original harness,then connect plugs from a
21 pin radio to the adaptor plug's wires-will need to
get or make an adaptor for the antenna plug also
If used delco radio does not work right,probably only
has the usuall broken solder joint problems-easy fix.
from'88 on,though i think some of the trucks such as
astro van and s-10 were 12 pin into the 1990s.If you
don't want to tamper with original 12 pin harness but
want to use a 21 pin radio,i think you could get one of
those wiring adaptor kits meant for aftermarket radios
to plug into original harness,then connect plugs from a
21 pin radio to the adaptor plug's wires-will need to
get or make an adaptor for the antenna plug also
If used delco radio does not work right,probably only
has the usuall broken solder joint problems-easy fix.
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