Dyes does Transmission and electrical.. (they are in Kettering and Beavercreek) I have never used them, but know of people who have, though google reviews arent all that Hot.. There is also a place on Dayton Xenia and Grange hall that looks like a Dumpy garage.. T&M Automotive, but it really is a good shop. THey do body work and I always found them really affordable, but its been a LONG time since i had cars worked on in Dayton
Bellbrook Automotive on Indian Ripple/County Line is decent as well.. but again, I havent been there in a LOOONG time..
http://www.bellbrookautomotive.com/index.htm