Time will tell. I hooked it up to one on with the key.

 

Hello again. I went on vacation, and when I returned I tried to start the F 350 since it has not been started in seven days. I cranked over like a new battery was in it! So it was the radio drawing the battery down. Thank to everyone for the help!!!

 

I put these in the cars I don't run often. Seems to work for me
http://www.google.com/url?sa=t&rct=j...R_F7kif7OHe9EQ