what is this "button" yer pressing?
the OEM TF wiper motor has a mechanical dash switch that runs a slider on the wiper motor, the motor has one wire for 12V+ and gets ground thru the case

sounds like you might have hooked up the control cable from the dash knob with the slider in the wrong position, or yer rebuild got the internal switch position wrong - here\'s one apart , only pic I have on hand, but I've never seen a "button" on any of them

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics