INSTALLATION INSTRUCTIONS

3

MOUNTING

The Power Grid 7 can be mounted in most any spot that would be acceptable for other MSD boxes.

However, if the Ignition is to be mounted with the System Controller paired in the top mounting

position particular attention should be paid to the heat around the units. In this stacked position it is

recommended that the units be mounted inside the vehicle cabin.

When you find a suitable location to mount the unit, make sure the wires of the ignition reach their

connections. Hold the ignition in place and mark the location of the mounting holes. Use a ¼” drill

bit to drill the holes. Install the vibration mounts to the ignition and mount the unit.

The Power Grid System Controller (PN 7730) is designed to

be mounted on top of the PN 7720 Ignition. Be sure to mount

the Power Grid System Controller so the USB connector

and Micro-SD card are accessible. The PN 7730 comes with

thread-turning (aka. Self-tapping) screws that will cut into the

walls of the pre-drilled holes on the top corners of the Power

Grid-7.

WIRING

GENERAL WIRING INFORMATION

Wire Length: All of the wires of the MSD Ignition may

be shortened as long as quality connectors are used or

soldered in place. To lengthen the wires, use one size

bigger gauge wire (10 gauge for the power leads and 16

gauge for the other wires) with the proper connections. All

connections must be soldered and sealed.

Grounds: A poor ground connection can cause many frustrating problems. When a wire is specified

to go to ground, it should be connected to the battery negative terminal, engine block or chassis.

There should always be a ground strap between the engine and the chassis. Always securely connect

the ground wire to a clean, paint free metal surface.

Noise Capacitor: MSD offers a Noise Capacitor or Filter to help eliminate EMI noise. This capacitor,

PN 8830, will also protect the MSD and accessories from voltage and current spikes.

ROUTING WIRES

The MSD wires should be routed away from direct heat sources such as exhaust manifolds and

headers and any sharp edges. The trigger wires should be routed separate from the other wires and

spark plug wires. It is best if they are routed along a ground plane such as the block or firewall which

creates an electrical shield.

WARNING: The MSD Power Grid Ignition is a capacitive discharge ignition. High voltage is present

at the coil primary terminals. Do not touch the coil or connect test equipment to the

terminals.

Figure 3 Mounting