Description
MegaSquirt Wiring Bundle
- 8′ TXL wire, color coded with labeling printed on the wire every 3 inches — no paper tags here!
- IAC and Ignition wires are included for MS-I / MS-2 use (or MS-3 Primary Harness use)
- Shielded Ignition input wire
Great for building up your own wiring harness, or wiring up your relay board where this will give you all of the color coded automotive grade wiring you’ll need to wire up the ECU side of the sensors (plus extra 20ga wire for sensor grounds), ignition components, and the ECU side of the injectors. For building your own harness on a car previously equipped with Electronic Fuel Injection, you’re good to go. For wiring up a relay board you’ll just need the fuel pump wire, 12v supply wire to the injectors, and you’re good to go.
Our revised version adds some extra wires for CANBUS and replaces the single coax wire with a two core shielded wire for even better noise-free cam and crank signals.
Includes these wires:
| Quantity | Wire Color | Wire Gauge | Function | Label |
| 1 | Tan | 20 | Extra I/O | MS 3 : SPR1 CAN-H |
| 1 | Tan/Red | 20 | Extra I/O | MS 4 : SPR2 CAN-L |
| 1 | Tan/Green | 20 | Extra I/O | MS 5 : SPR3 |
| 1 | Tan/Orange | 20 | Extra I/O | MS 6 : SPR4 |
| 1 | Black/White | 20 | Sensor Ground | |
| 5 | Black | 20 | Ground | |
| 1 | Orange | 20 | Intake Air Temp Sensor | MS 20 : AIR TEMP |
| 1 | Yellow | 20 | Coolant Temp Sensor | MS 21 : COOLANT TEMP |
| 1 | Light Blue | 20 | TPS Sensor | MS 22 : TPS SIG |
| 1 | Pink | 20 | O2 Sensor | MS 23 : O2 SIG |
| 1 | Shield 2 White Conductor | 20 | Ignition Input Signal (Tach) | White: CRANK CKP+ / RPM INPUT Black: CKP- |
| 1 | Blue/White | 20 | IAC1A (MS-II) | MS 25 : IAC1A |
| 1 | Gray | 20 | 5v VREF (TPS, etc) | MS 26 : 5V+ VREF |
| 1 | Blue/Red | 20 | IAC1B (MS-II) | MS 27 : IAC1B |
| 1 | Red | 20 | 12v+ Power to MS (switched) | MS 28 : 12V+ SWITCHED |
| 1 | Green/White | 20 | IAC2A (MS-II) | MS 29 : IAC2A |
| 1 | Light Green | 20 | Fast IDLE (FIDLE) Control (switched ground) | MS 30 : PWM IDLE |
| 1 | Green/Red | 20 | IAC2B (MS-II) | MS 31 : IAC2B |
| 2 | Blue | 20 | Injector Bank 1 | MS 32+33 : INJ BANK1 |
| 2 | Green | 20 | Injector Bank 2 | MS 34+35 : INJ BANK2 |
| 1 | Brown | 20 | Ignition Output (MS-II) | MS 36 : SPARK A |
| 1 | Purple | 20 | Fuel Pump Relay Control (switched ground) | MS 37 : FUEL PUMP RELAY – |
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$48.00