Haltech Nexus
These are harnesses for the use of Haltech's Nexus R3, R5, S2, and S3.
The Nexus offers full engine control.
In some instances, the factory ECU remains in parallel to communicate on the OEM CAN bus or control automatic transmissions.
Fully plug and play. Easy to install. Easy to uninstall.
Saves time, hard-wiring costs, and your factory wire harness.