If you are using a factory harness and are after an easy ECU upgrade, take a look at Haltech Plug 'n' Play Adapter Kits. These adapters plug directly into your Haltech ECU and have a set of factory connectors on the other side which plug straight into the factory harness.
Haltech's Nexus S3 is the successor to the acclaimed Elite 2500, offering a serious upgrade in performance and functionality. The S3 combines all the classic functionality of the Elite 2500 with new features and the superior processing power of the successful Nexus platform.
