Please help me identify these fuel injector plugs and the injectors?

[1Bad68camaro]

About 9 months ago I purchased a motor and harness from a guy in houston. The harness was still at a shop getting converted for easy hookup and computer programming so I never had the harness on the engine. Now i'm attempting to hook it all up and the plugs dont seem to fit the injectors correctly. They look similar but dont fit right. Let me know what you think. I already knew I was was going to need adaptors for when I put my new 60lb injectors in but now i'm not sure which style they are..

https://static1.pt-content.com/images/pt/2012/12/injector1_zps8136e61c-1.jpg
https://static1.pt-content.com/images/pt/2012/12/injector2_zpsaba0d2f4-1.jpeg
https://static1.pt-content.com/images/pt/2012/12/injector3_zps5851c177-1.jpeg
https://static1.pt-content.com/images/pt/2012/12/injector4_zps400089fd-1.jpeg

[JMitch19]

That injector needs an EV6 connector. I can get you a part number while I'm at work tomorrow. If I forget pm.

[cornfedbill]

Those look like Denso connectors. The injector definitely has the USCAR connector on it. Some EV6 and most EV14 injectors have the USCAR. Be careful. Many EV6 injectors use the Bosch Jetronic connector that was used on most early systems.

I believe all LS motored Corvettes have the correct USCAR connector you will need.

[1Bad68camaro]

I will not be using those injectors, I was just trying to figure out which was the incorrect part for a 2001 Suburban 5.3 motor. Im guessing I was given the wrong harness with the motor. So what years had those harness connectors and will there be any others plugs different on the engine harness? Here are the pics of the injectors and harness going on the car, so the adaptor will will need to fit these.

https://static1.pt-content.com/images/pt/2012/12/newinjector2_zpsad4be61d-1.jpeg

[JMitch19]

If that is the injector you are going to run you need GM part number 12129140. You can buy them at mouser.com very reasonably. If you look at the product data sheet it will give you the part numbers of anything else you need with the connector.

[cornfedbill]

That connector on the injector you will be using is the very common Bosch Jetronic. It is available from many sources and has been in production since the Cosworth Vega.

I don't recall this connector on any of the full size trucks GM trucks. I think they were all Denso or USCAR connectors. I could be wrong though.

Your best bet may be to purchase the connectors and update the harness. Just make sure you purchase the terminals with the connectors.