i have to put a new high low switch in my jet drill model # ghd-20pf but jet stop makeing the switch i need so jet sent me a smaller one i dont have a clue on how to wire the jumpers does any one have the same model that could take a look at theres there are 2 diffrent kinds 4 this model # my is the one that does not have the side box to the left any help would be great thanks brent