Isx to x15

[Washbour]

Good morning,

My names Anthony washbourne... I've been helping a friend with a 2012 western star isx cummins that engine went after a ton of miles.. deleted and such.. he got a sweet deal on a 2020 x15 low miles and swapped it in. He bought the new ecm plug being the x15 came with the ecm and another friend followed the diagrams to pin it to the truck harness.. everything runs great he had a new program done in ecm because the ecm was looking for after treatment that's not there.. so it runs has throttle all dash light body lights everything. But 0 guage functions. Volts tach temp etc ... trying to figure it out.. pls help ...

Thank you