I need help with the coil configuration on my 95 lt1 swap in to my 96 formula I have both harnesses and pcms I have wired it both ways so far I had obd1 with security light (so no gas) and now I have obd2 with no spark bc I figured I would need 96 coil with 96 harness and pcm and finally done the vats bypass now

 

Confusing…. is the SECURITY light still on? If so, that doesn't indicate a problem with the fuel or spark, it simply prevents fuel from being supplied. The only difference between the 93-95 (OBD-1) and 96-97 (OBD-2) is that the earlier theft deterrent module functions (key recognition, START enable, and 50Hz fuel enable signal) is incorporated in the 96-97 body control module.

In any case, the coil and harness connector (dual plug vs. single plug) have to match.

 

Currently I just need to know which coil to use the 95 or 96 style its obd2 right now harness and pcm and I think i mentioned its a 95 dropout

 

I think it maybe be this 95 opti

 

You have to use the coil that matches the connector on the engine harness.

A 93-95 coil has two connectors, each with two pins, one connector is black, the other is gray, and they nest together side-by-side.

https://shop.advanceautoparts.com/p/...d573/3965554-P

A 96-97 has a single black oval connector with three pins.

https://www.jegs.com/i/ACDelco/065/D577/10002/-1

Coils are not differentiated as either OBD-1 or OBD-2. They are differentiated by the connector. The 96-97 coil developed a slightly higher voltage. The coil wire tower is slightly different.

 

Ha she's running ! On starting fluid.. maybe just clogged injectors but ha I been trying to do this for so long I had to build a lift and everything did this entire swap by myself I figured thats considering im 25