Mercruiser Wiring Harness Color Code Wiring harness(engine) Mercruiser 3l efi harness sender diagrams WIRING HARNESS(ENGINE) - 1998 Mercruiser 4.3L [ALPHA EFI] 4231017L1 WIRING HARNESS(ENGINE) - 1998 Mercruiser 4.3L [ALPHA EFI] 4231017L1 Check Details ← Light And Fan Switch Wiring On Off On Switch Wiring → Share with friends Link copied