Hi guys - sorry for the delay in responding. Had to go out of town on business for 3 days. I started to have a closer look at the jump start tonight and found that the switch is broken and malfunctioning. In fact the toggle came apart in my hand. I think I was getting an intermittent connection back to the jump start even after I thought the switch was flipped from start to run. I ran out and bought a new switch and wired it in. However, it is dark now and we will have to wait for suitable weather tomorrow to give it a test run. I will post the results of putting in the new switch

Thanks for the replies.

Bill