whats needed to run a 47re in a 12v fummins?

how much easier would it become if i were to get the tranny wirring harness and ecm for a 47rh, just plug and play from their, or..?
 
1) Get running with 47RH and OD/LU on switches.
2) Drive it while watching actual governor pressure on a gauge in the cab.
3) Purchase 2 adjustable N.O. pressure pressure switches that cover the pressure range you'd like OD and LU to kick in.
4) install pressure switches in cab next to gauge, fine tune, tweak, whatever.
5) install the pressure switches on the tranny or firewall or wherever you'd like to mount them.
6) play around with a kickdown switch, relays to incorporate the O/D lockout button if you want.

If everything's setup right this will work very good. If you half ass the tranny or buy the wrong switches it won't work right.
 
so would it be worth buying the ecm/wirring harness or would that not be needed?
 
I know you have to ground the od and converter lockup to engage. Which wire is the main power supply on a 47RE?
 
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