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FuelTech's LS550 V8 Complete Harness - Plug and play installation for your LS swap utilizing a FuelTech FT550 or FT550LITE ECU and GM LS engine. The LS550 V8 Complete Harness is pre-terminated with all connectors, relays, and fuses needed for a simple 3 wire battery hook up and ignition power. Connectors are labeled.
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