No power at key, just one click?

1984 GMC S15
65,000 MILES • 2.8L • V6 • 4WD • AUTOMATIC
Avatar
BIGMTERRY
  • MEMBER
  • 1 POST
Battery is good (fully charged), new starter and solenoid (just replaced-not rebuilt), I naturally thought it was a bad solenoid. It was running fine, until I installed a new electric fan. I was connecting the wiring and couldn't get power to fan when getting hot. So was checking the fan with my power probe and it worked but after running the fan with power probe for 10 seconds. Lost all power to key. Can't roll the windows up (power windows) lost all power to everything. I have checked every fuse. They are all good. Please help, I am dumbfounded.
Jul 23, 2023 at 5:50 AM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
I would check the fusible links down by the starter, if you pull on them, they should not be rubbery. here is a guide so you can test for power through the links and I have provided the wiring diagrams for the ignition switch co you can test the power inputs and outputs.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the images (below). Please let us know how it goes
Jul 24, 2023 at 11:48 AM