How to replace wall switch to garbage disposal also connected to dishwasher.

Gary's Avatar (by Gravatar) by Gary in  Energy » Electrical 

I've already replaced the switch. There are 3 black wires & a ground coming out of the box in the wall. I have it wired but the disposal doesn't turn on when switched. The dishwasher runs. If I switch 2 of the black wires, the disposal is on all the time and the dishwasher does not run.

What am I doing wrong?

Know the answer or have a comment? Post it here!

blog comments powered by Disqus is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.