Use this high quality wiring harness to install your MegaSquirt ECU. SymTech Labs makes this harness using only the highest quality TXL grade, 20 gauge wire. The tach/RPM input uses a special shielded, twisted-pair cable for superior protection from noise. Each wire comes with stamped labels every 3" along the length of the wire for easy identification.

SymTech Labs 420A MegaSquirt Wiring Guide: PNG | PDF
SymTech Labs 4G63 MegaSquirt Wiring Guide: PNG | PDF
SymTech Labs Generic MegaSquirt Wiring Guide: PNG | PDF