It won’t work with computer or Bluetooth or on another vehicle. It’s like it’s locked up or something.

*Will not start up

What’s up Christopher… my Nexiq will it start up with just the power light. Both Bluetooth and power light up simultaneously. Have you ever had an issue like this?

Ok, got it.

Thank you!

you can have them on the same connector. if you look at a J1939 deutsch 9 pin pinout you can see where there are provisions for both J1708 and J1939 wires in the same connector. allison DOC and servicemaxx both will search for and Look for both types of connections..

Good evening Christopher… sorry for the delayed response. I didn’t realize you had responded until now.

I have a large, single ECM dt530e military surplus. I have the schematic and have labeled and terminated the 1939 and 1708 wires in my bus bar along with MD3060 wires as well. (Fully custom project) This said, do I need to wire 2 separate j1939 connectors or will the NEXIQ receive ECM/TCM communicate through 1 since they are terminated together?

it should, there should be a 3-wire (yellow / green / Black) J1939 connection that goes from the ECM harness of the DT to the TCM harness of the transmission.. in my T444E there is a 3 pin connector on the valve cover for the purpose.. on a DT466E bus it had 3 pin round connectors with these wires in them that went to the dashboard.. the J1939 is a Data BUS meaning that you can splice into these wires (or best would be to unplug and make connectors to put your J1939 round connector someplace...

Now that said, you didnt mention the generation of your 530.. im assuming its a 530E? is it using the large single ECM with 2 monster connectors or does it have separate boxes for ECM and IDM (2004+)

you also need to find the J1708 wires if it is a pre 2008 engine.. they will go into the 9 pin round connector you create.. depending on your ECM type i can see if i have a pinout of the ECM connectors for you to find the J1708 and J1939 connections if you cut them off during the swap

Good afternoon Christopher… let me preface this by saying I’m a complete rookie and have gotten this far with a lot of research and help.

After getting screwed by a local mechanic, i took it upon myself to tackling and engine swap on my own with the help of great friend. We’ve put a DT530/MD3060 in a Gillig phantom. A completely custom set up from ECM pigtails terminated into a weatherproof box, new gauges, etc. Long story short, I purchased a Nexiq USB Link 2, based mostly off of your posts and recommendations. We are getting ready to wire in the J1939 connections and I’m curious: do I need a J1939 connector for both transmission and engine with a splitter? Looking at the engine and Transmision schematics individually, I don’t see a common connector between both. However, when I watched a Nexiq video, the interface scan had both transmission and engine diagnostics from a single connector. I’m sure I’m missing something and I hope you can help.