Install of APEXi Auto Timer on 89 240SX

[JDM180SX]

I'm just wondering if someone can confirm or correct me on a ECU #. I'm looking for the o2 sensor wire to the ecu and all i can come up with through searching on a couple forums are one person saying that its pin #29. I've checked different sites (apexi, HKS, etc.) and apexi says that pin #16 is the a/f sensor and 17 is the ground...at least, for their SAFC install. Any help would be greatly appreciated! And just to repeat, its for a Apexi Auto Timer install on a 89 240SX (KA24E). Thanks Again.

[JDM180SX]

Hey guys and gals, I found it out on my own. So, for anyone who may do the same install or need the info...

PIN # 19 = o2 sensor.

PIN # 48 = Engine Ground

Hope that helps anyone who may be in one will be in my situation.