This is just a continuation of the same issue(s) from your other thread. IDGet it. The history and continuity there can only help chase down your problem. If you're asking for just electrical suggestions here, then without going back to that other thread it'll be important to know what electrical diagnosis you've tried so far. As mentioned above the IC, ICM and opti (and grounds) are instant targets.
\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear)
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, wait for it... LT-4 knock module!