Where is the ignition wire under the dash on a 2002 Sierra 1500.
MECHANIC9
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2002 GMC SIERRA
160,000 MILES
I am installing a pro start ct-3371.
Wednesday, November 30th, 2011 AT 3:27 AM
1 Reply
RASMATAZ
MECHANIC
75,992 POSTS
The big red wire at the ignition switch connector is the power input feed-you gonna have to find the ignition circuit by turning switch to run position and check for 12volt output on its wire other then the accy circuit-