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View Full Version : Metra GMRC-01 Wire Harness and Antenna Adapter

slimdog55
11-10-2007, 03:39 PM
I just got a 2001 Pontiac Grand Am GT the other day, and I am very excited! I'm going to be putting my system in it during Thanksgiving. But I need to still buy my wire harness. I have a Monsoon System in it, but I am going completely after market.

Will the Metra GMRC-01 wire harness work with my car, even though I have a Monsoon system? (Remember, I am putting a whole new system in. New head unit, speakers, amps, ect...)

Also, I read something about an antenna adapter. I will be installing an Alpine CDA-9887 head unit. Do I need an antenna adapter to hook up the factory antenna to this head unit? If so, which one? (Metra 40-GM10 or Metra 40-GM20?)

I already got the dash kit. I just need to get my wire harness and antenna adapter if needed. Thanks.
sunrunner_pei
11-10-2007, 08:03 PM
Yes, that is the correct wire harness for your car. And yes, you need an antenna adapter, GM uses a non-standard plug for their antennas. I'm not sure which one of those you need though.
slimdog55
11-10-2007, 10:41 PM
Looking at the 2 adapters on Circuit City's website, I can't figure out which to buy.

Metra 40-GM10

http://www.circuitcity.com/ssm/Metra-GM-Antenna-Adapter-Aftermarket-Radio-to-Factory-Antenna-40-GM10/sem/rpsm/oid/10324/catOid/-13119/rpem/ccd/productDetail.do


Metra 40-GM20

http://www.circuitcity.com/ssm/Metra-GM-Antenna-Adapter-Factory-Radio-to-Aftermarket-Antenna-40-GM20/sem/rpsm/oid/10325/catOid/-13119/rpem/ccd/productDetail.do


I'm thinking I'm needing the Metra 40-GM20. Anybody know the correct one to use?
Blackhawk
11-10-2007, 10:57 PM
40-gm10. 40-GM20 is if you want to add a new antenna to the factory radio, I had to return mine because they gave me the GM20.
slimdog55
11-11-2007, 12:04 AM
Looking over everything now, it makes sense. Thanks for the confirmation. I'm going to buy it Monday.
pentavolvo
11-13-2007, 11:47 AM
if you dont care about keeping the warning chimes you can get a standard 10 dollar harness, instead of getting bent over for the GMOS harness
Blackhawk
11-14-2007, 01:27 PM
For that you also need a 12V switched power source. I'm guessing he wants the chimes retained.
slimdog55
11-14-2007, 05:57 PM
Got the Metra GMRC-01 harness today. Hooked it up to my after market harness, and I am now waiting for Friday, when I am going to install everything (New head unit, front and rear speakers, subs, and 2 amps). Can't wait!