I have a 1999 Chevy Blazer with the 4.3L. When I turn the key it clicks and all the lights and electric power goes out. I hear a lot of clicking by the glove box. then after a few seconds the lights and stuff come back on till I turn the key again. If I keep trying to start sometimes it will start. but once I turn it off it does the same thing again. This is my first time to the forum seems there is alot of help out there. I have owned the Blazer since it was new and have minimal problems with it but this one has me stumped

Thank you