Yes, you need the kick down switch. Think about hills. I used a DPDT switch and a Bosch style relay.

wiring diagram.

Yes, you are correct in thinking the solenoid is activated even when the unit is locked out.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.