DIYEFI.co.uk Spark Driver Board Mk3

From $1

1. DB25 connector
2. Usage Notes

Up to 4 Spark Drivers (up to 8 cylinders)
9 Auxiliary input/outputs for patching though fan relays,ICV's, LEDs, boost, shift lights etc. See Multi-Output driver board
Preinstalled 330R resistors, ready for direct connection to Megasquirt.
Compatible with VB921, BIP373 & Fairchild IGBT drivers.
Dual layer PCB with dual 2oz copper tracks for each driver output for maximum current output.
DB25 plug, uses 3 Pins per driver output.
Fuse Protection (20 Amp blade fuse installed)
Dimentions: 18mm x 77mm x 48mm (HxWxD)

DB25 connector

Pin
1,2,14	Spark output A
5,6,18	Spark output B
9,10,22	Spark output C
12,13,25	Spark output D
11	Aux in/out
15	Aux in/out
16	Aux in/out
17	Aux in/out (no solder pin)
19	Aux in/out (no solder pin)
3/4	Aux in/out
7/8	Aux in/out
23/24	Aux in/out
20/21	Aux in/out

Usage Notes

Make sure the board, is properly grounded. It's designed to be mounted on metel, which must be grounded to the vehicles negative supply.

Use isolators on the drivers (supplied), and make sure the drivers are bolted down to metal to act as a heatsink. If your drilling holes, make sure the holes are cleanly cut. Tto avoid stray bits of metel from shorting the metal tab, coutersink the holes with a large drill bit.

Connect the pins A, B, C & D to your megasquirt board. The diagram below may help. Read the Megasquirt-extra manual for a more detailed description of the outputs.

The spark outputs should be connected to the negative terminal/pins of the coil.