Need help to simplify wiring diagram.

last year 7al-3, transbrake, NOS mini progressive, 2 relays- one transbrake interlock and one for retard to 7al-3. Using W.O.T switch and fuel pressure switch on nitrous fuel supply. Used the mini controller to delay 4 seconds and then spray the remaining 5 seconds. 75hp shot, just for index racing tuning aid. Also ramped in nitrous but not needed.

This year 7531 msd, Would like to simplify. Even thought about dropping the NOS mini, but then I wlll need relay for solenoids ! Also .4 pro tree so I dont want the transbrake solenoid being fed from a relay, rather have transbrake interlock that disables the nitrous when power is feeding same as last year. :confused1: