N14 ECM Plug

So now I see what Pup was saying, I was looking for another round 9 pin type plug as that’s what I was told it would be. The weather pack above the fuel filter on mine has three pins for some reason

 

Every mechanic I brought it too had one of those Laptops and they had two plugs, both round and similar to the one beside my ECM, and said that’s all the plugs they had. They tried hooking to the one beside the ECM and said it was something they’ve never seen before and it should be above the ECM mounted, but like Pup said that’s only on Celect+ which I didn’t know and apparently they didn’t either

 

Found this back behind the pump in a weather pack too

 

I’ve found a guy who actually knows what he’s doing with the N14, he has the harness to hook up to the two pin datalink. And I have another question, the Speedo in the truck works but it’s never even close to what it should be, sometimes over and sometimes under. At times it can be 10 off and sometimes I’m rolling in 1st and it says 75. This would be a bad speed sensor right?

 

He seems to know his stuff about the N14 that’s for sure, I’m new to it so I have to ask everything I need to know

 

Is it worth the difference?