Starts, then doesn't start, then starts again.

So I started with the ECU just because that's what I'm most familiar with. Scraped the firewall and cleaned it to get the best connection I could. Went and got a little bit longer bolts and got the star lock washers and out a nut on the back side. Started right up. Hopefully that fixes it but if it acts up again I'll make sure I run through some more trouble shooting and let you guys know what's going on but so far so good. Thanks for all the help.