In the Dremel's I've taken apart there are few components because it's triac speed control (light dimmer).

probably close to this: https://www.electroschematics.com/mo...or-with-triac/

A jumper between the two terminals other than the one going to T2 is all you have to do.

if there is a number on the part. You jump MT1 to MT2.

e.g. https://www.nteinc.com/specs/5600to5...nte5621_27.pdf

All pin outs may not tbe the same.