The ground wire that terminates on the Thermostat Housing... where does the other end go. Looks like it routes into the cabin behind the glove box... After removal of the glove box you can not access.. looks like the ECU (guessing) has to be removed.. but bolted through firewall. Seems like wipers have to come off... plastic cowl and then access the bolts on firewall side... is that right. Is this where the other end of the ground is located?

I am having major problems with this ground.. broke off thermostat (blot overtightened), moved to valve cover.. worked for a week but them became intermittent. Car would stop... now will not start. Have tried on lift point, valve cover, block, even back to battery... etc. Checked other grounds and all good. Rubbing ground wire on various points will cause it to kick some.. but not long enough to start. I am getting fuel and spark but it something is not consistent.

Thinking the other end or wire must be bad. Trying to rerun new wire. Tried CPS, Ignition Cart is 6 months old. Will crank but will not start. Twice module looks ok, no signs of ever wet, no corrosion on connector... etc