Would anyone out there have a part # for the wiring harness that runs from the top of the opti spark to the main wiring harness. It measures about 15 inches long, consist of 4 wires and a large connector that fastens into the main harness about half way back on top of the engine. The end that inserts down into the optispark is cracked and broken. I'm afraid that it is part of my problem. I know that this must be from a 95- 97 model year. My dealer tells me that there should be a tag with 4 numbers on it attached near the female connector. Thanks

 

Why wouldn't the dealer know the number?

Anyway, it's not real cheap.

1995-1997 optispark (vented)
electrical harness
GM p/n 12130319

If you ever want to buy GM parts, use either of the guys below. Wholesale prices and no rip-off shipping.

Dal Slabaugh: 877-448-5451
email: lockitup@bright.net
VanDevere Buick/Pontiac/Olds Akron, OH

or

Jason Cromer: 877-726-8295 or 850-243-8826 (direct parts dept ph #)
email: parts@samtaylor.com
Sam Taylor Buick/Cadillac Ft. Walton Beach, FL

 

The dealer I talked to had a breakdown of the entire harness only. It was not a good picture. He thought maybe the harness including the piece I need was sold as one. Yes, you are right, very expensive. I guess my best bet is going to be someone parting one out or a salvage yard.