Truck is getting fuel just no spark. I've got an MSD 6AL box, Blaster 2 coil and here is my problem. The truck will not start unless the 12V switched wire is connected to a constant 12V source, then it'll run for a few seconds and die again. When I connect it to a 12Switched source, it'll crank and crank and crank but won't fire up. I've checked my 12Switched sources with Multi-meter and they are just fine. I'm scratchin my head on this one, does my truck just want me to kill it?