hello everyone.... I have been troubleshooting a no spark issue and here is my question. I disconnected the wire for each coil from the power pack. I then connected my light tester clip on the screw for the #1 coil and then grounded the test probe and cranked the engine and the light came on meaning I have power at least to the power pack. I repeated the test on the remaining two with the light coming on but when I reattach the wire to the pack from the coil and try to test the light doesn't come on. I have good compression. could this be a ground issue?