I thought it might have been.
This is a screen print from Rockauto.com. The part number(s) might help you find a cheaper source, maybe. The ACDelco version is made by Standard Motor Products.
Bruce, up on the firewall but behind the engine, there is a black 3-way wiring connector. If you were to disconnect this connector, you can then remove the short section of wire (3 foot? (1 m?) long) and can solder/shrink wrap the harness on the bench instead of doing it above your head.
This is from my ’86 FSM – but it should apply to your car:
BudW