6Pin, 9Pin, Green plugs etc

A lot of different ones. Some change every few years. Want to sell something, go to the manufacturers and get it.

 

It is really simple.

Most of the early ones are 6 pin, this would be like 1999 and earlier. The reason for this is that they used a different protocol for the ecm - I think it was J1756.

After that they were 9 pin, they shifted to the J1939 protocol.

Most of the time if there is a J1939 protocol, then it is 9 pin. The exception may be transmission ecms where there is a 6 pin.

My diag equipment has all the connectors with it, I haven't used the 6 pin except for my little RV/truck setup.

They make adapters to go from 6 to 9 or 9 to 6.

By the way if you are selling elog systems, the manufacturer needs to be clear on which connectors are use, they are supposed to be using J1939 protocols, nothing else from all I read.

 

It isn't just how many pins, it's the configuration of the pins. I need two different connectors for the freightliners and two for the Volvo's.

 

You need the triangle shaped 6 pin plug too?

I thought that was used for transmission diags only.

All the ecms they've installed have one plug going to the connection and that's it.

 

Left 2009-2016 FL, Center 2017-18 FL, Right Volvo/Mack. When you hook up an EOBR it is connected to that plug with a Y connector.

 

I have the 2012 Freightliner with an 9 pin the omnitracs doesn't come on after I connect it could you tell me what the problem with that.

 

There are now 6 different 9-pin cables (counting the weird Westernstar one.) See the picture attached to this post. What is the year/make/model of the truck?

- was the Omnitracs working in this truck in the past, or is this a new install?