Plug & Play adapter harness that adapts from Cat 3116 or 3126 with 40 Pin engine electronics to Cat 3126B or 3126E 70 Pin engine electronics. One 40 pin end of the adapter harness will plug directly into the engine control harness that is coming from the firewall. The other end of the adapter harness will plug directly into the side of a Cat 70 Pin ECM.
Common Cat 3116/3126 40 Pin ECM Prefixes:
- 3116 - 8WL
- 3126 - 1WM
Common Cat 3126B/3126E 70 Pin ECM Prefixes:
- 3126B - 7AS, 8YL, 9SZ
- 3126E - CKM, BKD, HEP
NOTE: The 70 Pin connection is at the ECM