Coil per cylinder ignition, 94 Acura 3.2 V6 most of these you can get a pattern by using and adaptor on the coil, even just hooking your probe on the coil will pick it up if your lucky. Better if you amplify with an adaptor.

I hate crawling under to get a O2 signal if I don't have to, look for a connector on Ford Pickup, Bronco's 88 thru 93 behind the battery, or under the brake booster.