If you're only hooking it up for the use of looking at A/F ratios, then you'll only need to plug in the wbo2 sensor. Since you have an extra o2 bung in your exhaust, you won't need to worry about the simulated narrow band output, that's only if you removed your regular o2 and replaced it with the wbo2. If you're not boosted, don't worry about the boost wires. As far as the tach wire, not sure if you need a tach adapter to run this properly.

All I use is A/F & Tach, which was easy because my MSD has a tach signal out wire. I need to get an EGT probe and I'll be set.

~Luke
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1969 Cougar - 11.91 - 380HP
2007 GSXR 750
1999 OZ - SOLD - 15.26 NA - 14.71 on 75 shot