Our kit features TXL-spec wire with labels STAMPED every 3" along the entire length of each wire, not just paper labels stuck to the wires. This makes it a snap to trace wires in your engine bay.

The wire set is 12 feet long and includes all wires necessary for either the B&G Relay and Power Board or your own set of fuses and relays. Additionally, the kit includes wires for a 4-wire O2 sensor, 14ga fuel pump wire, separate ground wires for each sensor, injector signal wires (4), injector +12V wires (4), and 5 auxiliary I/O wires (S1-S5) for IAC, ignition control, etc. It includes 14 or 20 gauge wire where needed to total 41 wires and over 450' of wire in all.

DB-37 terminals are already crimped on at the MegaSquirt end of the harness and one DB-37 connector is pre-connected to the terminals. Simply attach the included DB-37 hood and lay out your wiring! As a bonus, the high-temp insulation does not creep back when heated up with a soldering iron!

Installation notes:
• A second DB-37 connector and soldering are necessary if a relay board cable is cut from this harness kit. If soldering is to be avoided, a relay board cable kit must be purchased in addition to the harness kit.
• Due to the fact that the MegaSquirt only has 4 injector output wires, in order to connect more than 4 injectors, you must splice multiple injectors (in parallel) into the injector signal and +12V wires.