87-94 GP Controller
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Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
87-94 GP Controller
Does anyone know if it's safe to use a test light to test the white wire is grounding on the controller . ??
Example, One end of the test light on 12v+, touch the other to the white wire on the relay to test that the controller is grounding.
Or will that back feed the controller and damage it.
-Enjoy
fh : )_~
Example, One end of the test light on 12v+, touch the other to the white wire on the relay to test that the controller is grounding.
Or will that back feed the controller and damage it.
-Enjoy
fh : )_~
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Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
Disconnecting the ground does not get the goal accomplished.
The goal is to test the controller signal with a test light ... Does it ground or not.
I suspect it will back feed and destroy the controller, I just thought I'd ask, maybe someone has done it and it hasn't hurt anything.
I have only one 87+ controller, it's good I want to keep it that way...
One day I'll get my hands on one I can dissect!
-Enjoy
fh : )_~
The goal is to test the controller signal with a test light ... Does it ground or not.
I suspect it will back feed and destroy the controller, I just thought I'd ask, maybe someone has done it and it hasn't hurt anything.
I have only one 87+ controller, it's good I want to keep it that way...
One day I'll get my hands on one I can dissect!
-Enjoy
fh : )_~
Thread Starter
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Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
-Enjoy
fh : )_~
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Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
If you hook the test light ground to a ground, then probe the white wire terminal with the key on, you will see battery voltage on that terminal.
Power from the ignition side of the relay trigger coil is passing through the coil to the white wire terminal.
So the voltage from a test light will not hurt the controller, it see's power at all times when the key is on.
Power from the ignition side of the relay trigger coil is passing through the coil to the white wire terminal.
So the voltage from a test light will not hurt the controller, it see's power at all times when the key is on.
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From: Huntington Indiana
If you think you have a grounding issue for the controler. Run a separate ground wire direct from the battery to the controler grounding bolt attach it there (avoiding the grounding from the block). I did this 6 years ago and my grounding problems / controler problems went away.
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Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
If you think you have a grounding issue for the controler. Run a separate ground wire direct from the battery to the controler grounding bolt attach it there (avoiding the grounding from the block). I did this 6 years ago and my grounding problems / controler problems went away.
-Enjoy
fh : )_~
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