[Leih93lt1]

Russ Sorry but, have u checked fuses? Something like the cig lighter fuse supplies the power to the OBD connector too.

Actually only 1.5 cents with the economy today.

I'm having a similar problem connecting my 93 lt1 the cig lighter fuse, which is good, is also for my horn and the horn isn't hooked up, could that be my issue?

 

[Injuneer]

Not the same issue. The 96/97 OBD-2 16-pin ALDL connector has a +12V pin supplied from the cig lighter fuse. The 93-95 OBD-1 ALDL connector does not have a +12V pin, so there is no connection to the cig lighter fuse.

What scanner are you using? There are a couple of high end OBD-1/OBD-2 scanners that will not connect to 93-95, because they are looking for the +12V and there is none.

If you are just trying to pull codes, hopefully you are aware all you need is a paper clip (works on 93 ONLY):

http://shbox.com/1/dlc2.jpg