im trying to figure out how to connect this thing, my 95 z28 has the ob2 face i checked shbox, for some reason the pins from my scanner looks bit different is 3123 gm code reader bought it from kragen i been searching for schematic no luck, anyone has used this? trying to bypass it with wires

 

Your 95 has OBDII the reader you bought will not work with your car. Even tho the 95 still only has 1 O2 sensor it is running the OBDII diagnostics system. Kinda confusing I know but head back to Kragen (Or O'Reilly if they changed over already) and get them to read the codes for you.

Massey

 

GM OBDI (or ALDL as GM calls it) can be read by shorting pins A & B and counting the blinks of the CEL. the first code that will come up on a GM ALDL system is 12 which means no tach signal. This is normal and when you see 12 blink again you know that all the codes have been given. Each code will blink 3 times then move to the next higher number.

Massey

 

from what i have found it will work on a 93 and 94 but not a 95. found a couple places with the same info. http://www.autobarn.net/eqgmcodread.htmlcan u take it back?

 

for 4th gen z28s, 93 is the only yr the paper clip trick will work.
dang i type slow. lol

 

yeah i hooked up the leads to the obd 1 reader but didnt get the check engine light to blink hahaha i was hoping it would

 

The 95 PCM is OBDI but the connector is OBDII. You need a OBDI scanner, not a cheap code reader, and a cable to convert the OBDII pin out to OBDI pin out. The cable is provided with good OBDI scanners, or one can be cobbled up in your garage. The codes cannot be blinked on 94 & newer.

 

TIG raises his hand because he knows the answer

with a 95 Z28

I use the Actron 9145

it plugs in, reads codes as well as data when the car is running

It also works on all your OBD2 vehicles

 

The Actron 9145 is a good chioce, as it can read both OBDI & OBDII and all necessary cables are available.