MEFI Repair
Pay in 4 interest-free payments of $20.00 Learn more
Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
</STRONG> 
GPS tracker) using the round J1939 9-pin Deutch connector on a vehicle to be used with Allison vehicles that use a standard OBD2 style connector with ground wired to pin 4
A critical step in the tuning process is the ability to upload and download programs between your MEFI controller and your PC or laptop
If you decide later that you want the ability to do tuning as well
This is an adapter that allows a cable with the standard J1939 Male Connector (4-slot mounting) to be mounted in a truck that requires a Jam Nut mounting connector
MEFI Repair </STRONG>