Magnum97
Registered Member
I know the item on the passenger side of the truck is the NATO Slave-Start plug, but what is the thing on the drivers side in the grill?
). Anyway, if that "main" switch is off, ALL lights won't work; turn signals, brake lights, headlights, and interior lights. I usually don't figure it out until I realize the turn signals aren't working. Then I realize I've driving around with no brake lights probably pissing off a lot of people. 

Does the torque converter not lock on a TH400?
I had been assuming that the switch on the brake pedal was to unlock it, however I suppose it would make more sense your way.