Check engine port location and ob1/ob0?

[RichardPryor]

Where is the port located in my 92 ram 50 4x4 and is it an ob1 or ob0. Thanks. They couldn't find it under the dash.

[bitrootvz]

It is just behind the dash on the left side of the steering wheel behind the fuse panel. It's a white connector and you use either a analog voltmeter or you can use an led light. ground goes to the lower left pin and hot goes to upper right pin. just count the flashes or needle movement a long flash means factor of ten so if the light stays on for a second and then flashes 3 times in a row for a half second then the code is 13.

[Can1991Ram]

It is a real pain ... the light idea is good though..
I have been using an analog voltmeter but it's a pain.

I'm assuming the output is up to 12 volts so just use a regular test light?