1985 Other GMC Models need to find out....

1985 GMC
80,200 MILES • V8 • 4WD • AUTOMATIC
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T MO
  • MEMBER
  • 2 POSTS
I have a 1985 GMC Suburban and I need to find out if it is positive side switched or negative side switched, how do I know?
Mar 27, 2008 at 3:50 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
What are you working on? I don't get it
Mar 27, 2008 at 4:00 AM
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T MO
  • MEMBER
  • 2 POSTS
I am installing a headlight flasher and I need to know if I have a positive or negative side switched system, dont know how to find out.
Mar 27, 2008 at 4:55 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
For me at the coil side of the relay positive goes in and the other side goes to ground
Mar 27, 2008 at 8:50 AM
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