Parasitic battery draw

[andrewpclayton]

Here’s where I am so far..

Disconnected neg terminal connected multimeter and the reading is .80

I broke a bolt in the old one so I have a new alternator

New external regulator, but it’s buzzing really loud so I think it’s not grounded well? I ordered new rubber grommets for mounting, its mounted directly to the radiator support now.. When I unhook the external regulator the reading goes to 0
I unhook the blue and white wires from the alternator and the reading goes to .35

I unhooked every fuse in the fuse box and the turn signal relay and the reading remained at .80

Also unhooked the electric choke, disconnected the horn relay as I don’t have a horn
Still at .80

I disconnected the wiring harness coming from the cab on the drivers side and the reading went to 0, so does that mean it’s in the cab somewhere?

Is there something in the cab that’s not on a fuse that I haven’t thought to check? I’ve read every post I can find and I am out of ideas

Any thoughts?