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
That's where I got the photo but for whatever reason, it refused to show up. I deleted it and the gray box is STILL there. Computers are our friends, they make our life easier (or so we're led to believe, lol).