12 Valve (gen 2 ) wireing

[DVolk]

I got a 94 im going to install need to know how to wire it , i got 93 wireing and 94 engine wireing does any one know of a pig tail i can use to marry the 2 to gether or a wiring harness or what i need to add to use with a 93 cummins wiring harness ??? Thanks

 

[DVolk]

The diffrence that i can see is the 94 has a extra white plug the 92/93 has only a grey and a black plug other than that the 94 would litterly plug into the truck what is the white plug for ?