1982 DS Trouble

[Mooncarter]

Hey guys. Just rebuilt a 1982 DS with the 5 solenoids. All new solenoids, everything cleaned, installed new batteries 2 days ago.

Cart has been running flawlessly. Got on it today (lever in F) and turned the key and the main solenoid clicks on, unclicks with key off or FNR in N. Cart is still running fine.

I assume this means the micro switch in the "speed box" for the main or master solenoid has failed. I have never had to go inside of one of these boxes but it seems to me if the micro switch fails the solenoid would not get the 36v+ to engage. Thoughts? Or am I missing something here. Thanks!