Dam man thanks for all the good info im going to check some stuff this week when i get some time.
I replaced this motor 2 years ago and did all the ground stuff you are talking about at that time.
Battery is a Blue top that i bought refurbished from Daves off road last year.
Stereo is pretty big 1 10" and 2 8" subs with 2 amps.
Also have rock lights and front spot lights.
I have a one wire GM Alt. breaks and alternator ready to go in just no time to do the swap yet.
The lights Pulse when driving but haven’t checked with stereo off.
I’ll have to do some checking with a meter and see what’s what.
Thanks for all the info man.