I have installed a device called a add a circuit to my fuse box so I can run some more 13 volt stuff. However I am not getting 12 X only getting a LITTLE over 3 . Any ideas.
In all my years of tinkering and trouble-shooting, grounding problems are the #1 culprit. I have learned to start looking for the trouble at the grounding point
. I'm glad you got it fixed!