Glo plug code

2006 Jetta Volkswagen BRM. Started out with glo plug cylinder 4 circuit code. Did a voltmeter test and test light all glo plugs seem to be fine. The glo plug harness was in really bad shape fell apart in my hands as I was unplugging the harness. I ordered a new harness and got it wired in last night. Now I have codes on for all 4 cylinders. Also have a code for engine coolant Temperature sensor which I had unplugged while diagnosing the harness got to double check that it’s plugged in correctly or try to find a broken wire. This gremlin is really getting to me. What would you guys check next??
P0671 cylinder 1 glo plug circuit/open
P0672 cylinder 2 glo plug circuit/open
P0673 cylinder 3 glo plug circuit/open
P0674 Cylinder 4 glo plug circuit/open
P0118 engine coolant temperature sensor 1 circuit high

Cleared the codes and they never left

Just confirming that you cleared all codes manually after your repairs?

Yes cleared them twice and still there