Re: 1941 120 3 Speed with Overdrive Wiring?

Posted by HH56 On 2023/11/27 23:55:33

No. The R11 plunger length that extends into the overdrive mechanism and locks into the pawl is a different length. R9 extended is about 2 1/4" and R11 extended may be about 1 1/2" "1". R9 solenoids and relay boxes are unique to that unit. R9 relays are still out there but are getting expensive. .

Resistors do not work well with solenoids and overdrives in general. Trying to run a 6v overdrive at 12v using a dropping resistor is almost a guaranteed way to burn something out. The solenoid pulls a heavy current when moving but considerably less when just holding in an extended position. The value and wattage of a resistor would need to be different in each situation to get a proper voltage drop.

EDIT: Updated R11 extended length to 1 1/2"