a4ld with manual trans computer

[wannaturbo2.9]

I put a manual trans computer into my bII, I did it because I wanted a mass airflow computer, for cheap 65 bucks for sensor and computer, now everything works good except no overdrive, the wiring diagram shows 2 solenoids a 3/4 shift solenoid and a tcc solenoid. Will a newer shift lever with a switch fit a 1990 bII, also will it hurt anything to ground both solenoids at the same time?

 

[wannaturbo2.9]

Couldn't wait for answer have to drive on freeway tomorrow. The shifters with the button won't work for this, they are a momentary contact switch, would have to keep the button pressed down to make it work. I wired both the solenoids to 1 switch, test drive ok. Time will tell if it hurts anything, but with an a4ld with close to 200,000 miles it would be hard to say what hurt it.