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@Suprman likely has the right CTIS controller for your unit and more important: will tell you if he doesn't and confirm a unit he has is not 5 solid.
Using a 900 series is not a big deal, you just have to pull pins on the controller to isolate the J1939 circuit from it. There are several recent threads here covering the CTIS schematics and different programing using various power and ground combination.
We love our CTIS though it isn't the first thing I'd start with. There is a thread highlighting must do's; @GeneralDisorder has a very good list—
Using a 900 series is not a big deal, you just have to pull pins on the controller to isolate the J1939 circuit from it. There are several recent threads here covering the CTIS schematics and different programing using various power and ground combination.
We love our CTIS though it isn't the first thing I'd start with. There is a thread highlighting must do's; @GeneralDisorder has a very good list—