Kenworth or Peterbilt Harness - J1587 Firewall to OBD - NAMUX4

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J1587 Jumper harness for NAMUX4 Kenworth and Peterbilt Trucks
1.00 LBS
Calculated at Checkout

A J1587 jumper harness that works for both Kenworth or Peterbilt trucks with NAMUX4 generation of electronics.  This J1587 harness is to be installed between the firewall canon plug and the OBD connector.  Earlier generations of Caterpillar, Cummins and Detroit Diesel engine electronics utilize J1587, in order to broadcast engine control, this harness is required in certain applications. 

Engine models where used:

  • Caterpillar - 40 Pin and 70 Pin Engine Electronics
  • Cummins - N14 Engine Electronics
  • Detroit Diesel - DDEC3, 4, and 5 Engine Electronics

NOTE: For use on Kenworth and Peterbilt trucks with NAMUX4 chassis electronics.