I have cat comm adapter 3 part # 478-0235 for offroad equipment. Im currently working on a on road freightliner with a c7 in it. The truck has a 9 pin deutsch connector. What adapter do would I need to connect the off road 9 pin so I can connect et to the engine. Thank you.
Hopefully someone else can confirm but I think this is the one you need.
The one Nige posted is what you need
Thank you.