MSD6A WIRING DIAGRAM FOR A
MSD 6A Ignition Control with MegaSquirt-II
MSD 6A Ignition Control with MegaSquirt-II. The MSD 6A ignition is a popular aftermarket capacitive discharge, multiple spark ignition controller.
Wiring and Sensors - megamanual
MegaManual Index-- External Wiring Schematic-- External Wiring with a V3.0 Main Board-- Some Wiring Considerations General Guidelines for Automotive Wiring-- Wire Sizes The Relay Board-- Making a “Pigtail” to Connect to MegaSquirt--MAP Sensor-- Oxygen Sensors-- Temperature Sensors EasyTherm-- Throttle Position Sensor-- Fast Idle Solenoid-- Ignition Triggering-- Sensor Troubleshooting
MegaShift 4L60E Wiring - msgpio
Notes: For the pressure control (PC) solenoid: You need a minimum 4.7 Ohm (or higher resistance - up to ~10 Ohms), 10 Watt (or more) resistor (such as Digi-Key 4K-ND, $1) on the pressure control solenoid wire from the trans connector pin D to the GPIO board's pin 33. This resistor dissipates up to 4 Watts of power at low line pressures (maximum PWM percentages).
MegaShift(tm) and DRAC - msgpio
The Digital Ratio Adapter Controller (aka, and similar to the Vehicle Speed Sensor Buffer - VSSB) found in many General Motors vehicles from 1992+ are a good solution for obtaining a clean 5 Volt square wave signal from a VSS sensor in a noisy environment DRAC is contained in a small white plastic case. It is typically bolted to the ECM or located directly behind the glove box.
Initial Spark Advance Table Calculator - useasydocs
Creating an Initial Spark Table for Tuning. This is a tool for establishing a baseline spark advance table for your tuning efforts with MegaSquirt® or MicroSquirt® controllers.
MicroSquirt® Introduction - useasydocs
Your V3 MicroSquirt® controller uses a variable voltage signal from a throttle position sensor (TPS) to determine when the engine is at or near full throttle (to shut off feedback from the O2 sensor), when the engine throttle is opening or closing rapidly (and needing an accel/decel enrichment), and when the engine is flooded and needs to be cleared.