MSD Power Grid Power Module 77643, Installation Instructions Manual

2 

INSTALLATION  INSTRUCTIONS

M S D

•   W W W . M S D P E R F O R M A N C E . C O M   •   ( 9 1 5 )   8 5 7 - 5 2 0 0   •   F A X   ( 9 1 5 )   8 5 7 - 3 3 4 4

Figure 1 PN 7764 Power Grid Power Module

Figure 2 Power Module Harness

FASTENING SCREW
FOR MAIN POWER FEED

APPLY A SMALL AMOUNT

OF SUPPLIED LOCTITE 242

TO FASTENING SCREW

DISCONNECT

FROM

BATTERY

BEFORE

REMOVING

CAUTION

SEALED

MINI USB &

COVER

CAUTION!

DISCONNECT WIRE

FROM THE BATTERY

BEFORE INSTALLING.

TO

TO B

RED - OUTPUT 1 (12GA)

RED - INPUT 1 (20GA)

YELLOW - OUTPUT 4 (12GA)
YELLOW - INPUT 4 (20GA)

ORANGE - OUTPUT 2 (12GA)

ORANGE - INPUT 2 (20GA)

PINK - OUTPUT 3 (12GA)

PINK - INPUT 3 (20GA)

BROWN - TEMP SENSOR
                   REFERENCE (GND) (20GA)

WHITE - SENSOR SIGNAL (20GA)

ECT

(ENGINE COOLANT

TEMPERATURE SENSOR)

POWER SUPPLIED 

WITH CAN PIGTAIL

(WHEN THE POWER GRID
IS NOT USED)

GROUND

12V

A power wire must be installed to the Power 

Module from the positive Battery Terminal 

with an Automotive grade wire rated for heat 

and fluid resistance. 

WIRE SIZE SELECTION GUIDE

Current Rating AMP  Minimum Wire Size AWG

 80 

4

 60 

6

 20 

12