Ok im gunna replace all my main grounds in the engine bay. Have a few questions.

1) where is the thermostat ground any one have a pic? I went looking and this is what i came up with:
pic from helms


pics of my t-stat housing area:






am I overlooking or is it not hooked up?

2) the negative wire coming from fuse box. where does that wire end up? I couldn't track it by looking at helms pic or trying to follow wire.

3) not ground related but does any one know what goes in that screw hole under my vtec solenoid?

 

The ring terminal for that goes to G101, it's the main engine-harness/ecu ground. Pull your intake piping off and take a better look. It will be coming out of the engine harness in that area. It should go where your pressure switch is grounded in your pic.

 

hmm so its not grounded properly... prolly explains why had such a hard time getting a signal on the dyno. hopefully this is the culprit for my issues

 

well went and did more digging. turns out its grounded right behind the ground for pressure switch is just overlooked it. so does any one know about the empty screw spot under vtec solenoid?