Title : Megasquirt Relay Board Wiring Diagram
Link : Megasquirt Relay Board Wiring Diagram
Megasquirt Relay Board Wiring Diagram
The relay board takes 12v from the vehicle and passes it to the megasquirt efi controller but it also handles fuel pump relay and other wiring needed from the engine side. The ignition control signal from megasquirt ii on db37 pin 36 corresponds to the relay board pin s5 of the 20 position terminal strip.
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This page contains information on the megasquirt relay power distribution board for the megasquirt efi system.
Megasquirt relay board wiring diagram. Because ms is so flexible it would be impossible to print all the options on the relay board pcb. The relay board schematic from the bowling grippo site is the ones you should use for wiring your megasquirt to your relay board and wiring your relay board to the engine. Megasquirt support forum msextra solid state relay wiring help updated diagram 7 20 2018 view topic megasquirt support forum msextra.
Megasquirt wiring harness 8 feet long wiring diagram included. If you are using the wiring 5 5 3. This allows the mounting of the megasquirt ecu in the passenger compartment which keeps the ecu from experiencing the severe under hood.
Note that when running a megasquirt iii you can still run batch injection if you choose using the same wiring diagram as above. However you can also purchase your megasquirt iii with the ms3x expander board and then have up to 8 channels of sequential fuel and ignition outputs available. If you are using a stepper motor iac with the relay board and have connected the wires for the iac to db37 pins 25 27 29 and 31 then.
There is an separate internal wiring diagram for the relay board. The relay power board is designed to be installed in the engine compartment and interconnected to the megasquirt ecu using a remote cable. Not to mention all of the other features this enables.
The wiring harness and relay cable are mutually exclusive meaning they are not designed to be used together. 1 first find locations to mount megasquirt and the relay board. Note that the fuses and relays are already in the stock wiring so you will not need to change these.
Here is an external wiring diagram for the v3 0 board. I mocked it up that way took it out of the car loomed and taped it all up and reinstalled it again. I removed my dash to hide it all and installed my lc 1 gauge where the vent is on the left hand side by the.
I just fiured out where i wanted to place the megasquirt box in my case in the glove box and ran all the individual wires to thier respective locations. Megasquirt should be mounted away from excess heat like in the passenger compartment. V2 2 wiring is identical except that you will connect the tfi spout signal to pin 25 instead of 36.
Simply the best megasquirt harness available anywhere at any price. With the appropriate links on the v3 pcb. Official support forum for megasquirt microsquirt ms1 extra ms2 extra and megasquirt 3.
1a goes to s1 on the 20 position terminal strip of the relay board. I also did not use a relay board. Click the wiring diagram image for a larger view.
The norm to me with a v3 pcb and edis is to use the tach input db37 pin 24 marked 15 tach ign on the relay board for pip and the ignition output pin36 db37 marked 11 s3 on relay board for saw.
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