1990 pontiac firefly
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=95684
Printed Date: April 28, 2024 at 2:14 PM
Topic: 1990 pontiac firefly
Posted By: zatsteph
Subject: 1990 pontiac firefly
Date Posted: July 17, 2007 at 6:36 PM
i just bought this car (1990 pontiac firefly) and there's no deck in it.. just the wires hanging from the dash. The original factory harness has been cut out of it and i'd like to install some tunes. Just wondering if anyone has the info on what color wires are for what. Thanx.
Replies:
Posted By: chaos420
Date Posted: July 18, 2007 at 3:59 PM
Don't know what color wires are what, but it's fairly easy to find out using a test light and a 9v battery. There should be a 12v constant, a ground, and an accessory wire, for power. Using a test light to every combination of pairs of wires, you can determine which which wire is your ground, which wire is hot all the time, and which wire is only hot when the key is on. For the speaker wires, take your 9v battery and touch the two terminals to different combinations of the remaining wires, when you hear a pop in one of the speakers, you've identified one set.
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