MSD 88862 LS2 EFI to 6LS-2 Ignition Wiring Harness with 58-Tooth Trigger

The MSD 88862 is a dedicated EFI interface harness engineered to connect the MSD 6LS or 6LS-2 ignition controller (PN 6012) to factory GM LS2 engine management systems equipped with a 58-tooth crank trigger wheel. This harness allows the MSD ignition box to tap into existing sensor signals without disrupting the OEM ECU — the factory fuel injectors and engine management continue to operate normally while the MSD 6012 takes control of ignition timing.

Key Features:

• Interfaces MSD 6LS / 6LS-2 ignition controller (PN 6012) with factory LS2 EFI systems
• Compatible with 58-tooth crank trigger wheel LS2 and LS7 engines
• Allows full use of timing adjustment and RPM limit features of the 6LS-2 controller
• Supports programmable timing advance curves via MSD Pro-Data+ software
• OEM ECU and fuel injectors remain fully operational — harness does not interrupt factory signals
• Weather-resistant connectors for reliable engine bay performance
• Easy plug-in installation designed for straightforward setup
• Legal for use on emissions-controlled, non-emissions-controlled, and racing applications

The MSD 88862 harness is a required accessory when using the MSD 6012 controller in LS2 or LS7 EFI applications. Without this harness, the 6012 is limited to carbureted setups. Once installed, tuners and enthusiasts can manage ignition timing, program RPM limits, and upload custom timing curves using MSD's Pro-Data+ software or the optional handheld programmer (PN 7550).