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1985 Other GMC Models need to find out.

Tiny
T MO
  • MEMBER
  • 1985 GMC
  • V8
  • 4WD
  • AUTOMATIC
  • 80,200 MILES
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?
Thursday, March 27th, 2008 AT 10:50 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What are you working on? I don't get it
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Thursday, March 27th, 2008 AT 11:00 AM
Tiny
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.
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Thursday, March 27th, 2008 AT 11:55 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
For me at the coil side of the relay positive goes in and the other side goes to ground
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Thursday, March 27th, 2008 AT 3:50 PM

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