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This is a custom made wiring harness specifically designed for standalone LS1 jetboat applications

This plug and play harness has had all the hard work done including all sender wires for gauges plus alternator & starter wiring , fuse holder and relays 

As standard these are to suit a reversed intake manifold and manual throttle body, No MAF or 02.

Includes provisions for plug and play dash loom meaning easy removal of engine if the time arises

We can also supply an ECU - with or without tune or reflash your original to suit* 

*Dash loom not included 

*Tunes may not be compatible for all applications

*These are speed density tuned, open loop setups - no MAF or O2

*ECU must be from a manual throttle body application not fly by wire