Jeep CJ7 Wiring Series- MEGA Fuse Location

Over the next few videos, we’re going to continue our theme on good planning.  Specifically, we’re going to talk about picking the best locations for the major components that come with your Infinitybox system.  We’re installing our 20-Circuit Kit with inLINK and inRESERVE in our 1979 CJ7.  To get the most out of our install, we want to pick the best locations for the MASTERCELL, the front & rear POWERCELLs, the MEGA fuse holder and the inRESERVE solenoid.  We’ve broken this up into 5 different videos, talking about what you need to consider for each part.  This video covers picking the best location for the block of MEGA fuses that comes with your 20-Circuit Kit.

Everything starts with running primary power from the battery.  The POWERCELLs get powered by cables that connect back to the positive terminal of the battery.  These cables need to be protected against short circuits by fuses.  Your 20-Circuit Kit includes a block of 4 high-current MEGA fuses to protect the four 8-AWG cables that bring battery power to the POWERCELLs.  If one of these cables was to short to ground, the MEGA fuse becomes the weakest link in the electrical chain.  The fuse opens to protect the cable from damage.  You want the MEGA holder to be mounted as close to the battery as possible to minimize the length of unprotected cable.

We’re going to mount the MEGA fuse block right in front of the battery, under the hood.  There is a flat spot on the inner passenger fender that would be a great place.  It is a short run of cable from the positive terminal to this location and we can easily route the 8-AWG power cables to the front & rear POWERCELLs.  Watch this video to learn more about these and see where we’re mounting the MEGA fuses in the Jeep.

We are also installing our inRESERVE battery management solenoid in the Jeep.  The best location for the inRESERVE solenoid is usually right next to the block of Mega fuses.  This picture shows you how the Mega fuses go hand in hand with the inRESERVE battery management kit.

This diagram will show you the overview of the Mega fuses in the Jeep and show you how they connect to the battery, the inRESERVE solenoid and the 8-gauge power cables that feed each POWERCELL.

Infinitybox Jeep CJ7 Wiring Diagram- Cell Locations and Primary Power Routing

You can download a PDF copy of this diagram by clicking this link.

Picking the best location for the MEGA fuse holder will get you a safe and reliable electrical system in your car or truck.  It will also make running the power cables to your POWERCELLs easier if you plan in advance.  Keep watching for more in our 1979 Jeep CJ7 Install Series.

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