2.3L ('83-'97) OBD 1 and 2 questions

[Dav]

bought a obd reader for my 2.9 series 1. no luck yet finding the problems but then i haven't been using that truck. when i watch you tube vids on using the OBD, they run a bypass wire. is that required to get the dash cel to flash codes?
my work truck is a 95 with a 2.3. it needs the OBD2 reader. the connection is under the steering column. will i need a jumper wire on that? i found that there was no bulb in the cel. now there is. but i am not sure how to get it to show codes. i had the battery out yesterday. when i first started it today, it was trying to stall. after reving it a couple of times it stayed running right. i didn't think to look at the cel before it did run right so i am wondering if the computer needs a minute to reset after replacing the battery

 

[Dirtman]

95 is obd2, there is no jumper trick on obd2. But after hooking the battery back up it may take time for a code to set again. If your scanner is cheap it won't read pending codes so it'll take a bit for them to become permanent codes (codes that set the cel).

 

[Dav]

there is an OBD ii(B) for sale nearby. google mentions there is a llA and llB but does not say what the difference is. will the (B) work on my 95 ranger or is it for gm or what?