[Electrical] ODD Issues Abound, Please HELP!



A few weeks back I removed my power antenna so I could install a shorty (which I haven't gotten around to yet).
There seemed to be 2 "ground straps" attached to the antenna housing, so I whipped out the old dremmel, cut off the main housing, then re-attched the straps to the left-over piece.
I don't know how it can be related but shortly thereafter I started getting active handling and abs service messages.
Those stopped, then a few days later, I started getting low tire pressure alerts, I have CCWs and don't even have the sensors installed
Then yesterday on the way home, I got "reduced power" and "service vehicle soon" messages, and at the same time, the analog oil pressure gauge dropped to "0" while the coolant temperature gauge pegged high.
The car actually seems to be running correctly but popping up random and inane electrical messages, which are driving me insane!
Does anyone have any insight, where to start troubleshooting? What the HELL is going on?



Suppose I have some ground cleaning to do....







I cleaned the corrosion off the board and fixed that isssue Yes the BCM can and will give you weird TPS issues and warnings!!
BC





BC
BC





