Ok, I just bought this 95 Venture 2-up sled with a 480 motor. it had no spark, after some time tracing wires it was found to be a bad External coil. took it out on Tuesday for a test ride all was perfect and ran good, made it 18 miles till it lost spark again. could it have been just a bad coil I bought or is there something else that could be causing the coil failures? AKA: Voltage regulator or CDI??? Thanks for any help in advance!