I have a 660 which I moved from my previous residence all wired the same and was working fine, I pluged it in at my new house and it comes on for a second and goes out everytime??? I took it to my lfs and pluged it into there harness and it works fine, they had the same problem at a customes house and brought both of the ballasts they had tried and both worked on the harness at the lfs???? they tried new harness endcaps and bulbs at the customers house and none worked, wondering if someone has seen this before?? possibly an electrical outlet problem?? and ideas ??? I will test further