MegaSquirt MicroSquirt 3.0 Flying Lead (TXL, White)

v2 · public
Owner yourspec
Wires 33
Length 198'
Updated Aug 14, 2025

Project Description

This is a flying lead harness for the default Megasquirt Microsquirt 3.0 pinout. All wires are 8 feet of length and TXL.

You can copy this project and make changes to fit your project!
Total
$130.30
Wire Marking Wire End 1 Wire End 2
# Qty Name Wire Type Wire Gauge Wire Color Length Mark Text Interval Strip Length Tail Tinning Pin Crimped Connector Strip Length Tail Tinning Pin Crimped Connector
1 1 +12v power TXL 16 AWG White8' 0" A1 - ECU +12V PWR 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
2 1 CAN H TXL 22 AWG White8' 0" A2 - CAN H 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
3 1 CAN L TXL 22 AWG White8' 0" A3 - CAN L 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
4 1 Secondary trigger VR2 3 Conductor Shielded Tefzel (M27500-22SB3T23) 22 AWG White8' 0" A4 - SECONDARY TRIGGER 2.00" 45.000mm — — — — — — — — —
1-WHITE Secondary trigger VR2-1 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
2-BLUE Secondary trigger VR2-2 — — — — — — — — — —
3-ORANGE Secondary trigger VR2-3 — — — — — — — — — —
SHIELD Secondary trigger VR2-5 — — — — — — — — — —
5 1 ADC 7 TXL 22 AWG White8' 0" A5 - ADC7 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
6 1 Flex fuel sensor TXL 22 AWG White8' 0" A6 - FLEX FUEL 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
7 1 Fast / PWM idle TXL 18 AWG White8' 0" A7 - FIDLE 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
8 1 Fuel pump relay trigger TXL 22 AWG White8' 0" A8 - FUEL PUMP 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
9 1 Injector bank 1 TXL 16 AWG White8' 0" A9 - INJ 1 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
10 1 Injector bank 2 TXL 16 AWG White8' 0" A10 - INJ 2 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
11 1 Ignition bank 1 TXL 16 AWG White8' 0" A11 - IGN 2 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
12 1 Ignition bank 2 TXL 16 AWG White8' 0" A12 - IGN 1 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
13 1 Serial Rx TXL 22 AWG White8' 0" A13 - SERIAL RX 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
14 1 Serial Tx TXL 22 AWG White8' 0" A14 - SERIAL TX 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
15 1 Bootloader switch TXL 22 AWG White8' 0" A15 - BOOTLOADER 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
16 1 Acceleration LED TXL 20 AWG White8' 0" A16 - ACCEL LED 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
17 1 Warmup LED TXL 20 AWG White8' 0" A17 - WARM LED 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
18 1 Serial ground TXL 22 AWG White8' 0" A19 - SERIAL GND 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
19 1 Sensor ground TXL 22 AWG White8' 0" A20 - SENSOR GND 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
20 1 ECU Ground TXL 18 AWG White8' 0" A21 - GND 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
21 1 ECU Ground TXL 18 AWG White8' 0" A22 - GND 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
22 1 ECU Ground TXL 18 AWG White8' 0" A23 - GND 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
23 1 MAP sensor TXL 22 AWG White8' 0" A24 - MAP 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
24 1 Coolant temperature sensor TXL 22 AWG White8' 0" A25 - CLT 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
25 1 Intake air temp sensor TXL 22 AWG White8' 0" A26 - IAT 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
26 1 Throttle position sensor TXL 22 AWG White8' 0" A27 - TPS 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
27 1 +5V sensor supply TXL 22 AWG White8' 0" A28 - +5V 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
28 1 Spare analog input TXL 22 AWG White8' 0" A29 - SPARE ADC 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
29 1 Square wave primary trigger 2 Conductor Shielded Tefzel (M27500-22SB2T23) 22 AWG White8' 0" A30 A31 - OPTO IN 2.00" 45.000mm — — — — — — — — —
1-WHITE Square wave primary trigger-1 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
2-BLUE Square wave primary trigger-2 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
SHIELD Square wave primary trigger-3 — — — — — — — — — —
30 1 VR primary trigger 3 Conductor Shielded Tefzel (M27500-22SB3T23) 22 AWG White8' 0" A32 - PRIMARY TRIGGER 2.00" 45.000mm — — — — — — — — —
1-WHITE VR primary trigger-1 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
2-BLUE VR primary trigger-2 — — — — — — — — — —
3-ORANGE VR primary trigger-3 — — — — — — — — — —
SHIELD VR primary trigger-5 — — — — — — — — — —
31 1 VR primary trigger negative TXL 22 AWG White8' 0" A33 - PRIMARY TRIGGER - 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
32 1 WBO signal input TXL 22 AWG White8' 0" A34 - WBO 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
33 1 Tach signal output TXL 22 AWG White8' 0" A35 - TACH 2.00" 5.100mm — — AMPSEAL 1.3 (Tin, 770854-1) — — — — — —
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