Jim, Thanks for the reply

I've visted your very informative site many times.

Wiring harness appears to have been replaced. I stripped away insulation at thermostat housing and under black plastic cover above fuel rail.

I'd love to do a reman, but my budget's too tight.

I know the connector to the wiring harness has a clip that swings up. But is it threaded or just pull? I don't want to break this one, like I've done to so many other connectors.

Bob