[vipergtx500]

That didn't fix the problem, the car doesn't even start. It cranks but never turns over, where before it did. The opti looked fine, there was no moisture and the screws didn't back out. I changed the wiring harness from the opti to the main wiring harness. Im going to check the cable from the coil to the opti. Any1 have any more ideas. besides the obvious, being the whole optispark is bad. another thing i noticed, when i turn the key to on normally the car goes "ding ding ding", but my car goes " di di di di di di di di ding ding ding" and the interior lights flicker a bit. This is related to whats going on because it only started happening when this problem occured. short somewhere? bad ground? im all out of ideas except the opti, but the opti has nothing to do with any of that.