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Auxiliary electrical system designed and built to provide a flexible architecture to allow for a wide range of future modifications
Auxiliary electrical system designed and built to provide a flexible architecture to allow for a wide range of future modifications
Goals and Requirements
Goals and Requirements
Auxiliary electrical system for aftermarket equipment
Isolated from the stock electrical system to reduce unintended impacts from potential failures
Provide an architecture that allows for additional modifications with a wide range of power requirements
Designed so that troubleshooting any issues that occur is as easy as possible
Don't set the truck on fire
**For informational purposes only. Fuse sizes and wire gauges were selected with specific design requirements, factor of safety, wire quality, wire lengths, and specific products in mind. Do not use as a source for your own project without doing your own calculations**
Design Considerations
Design Considerations
Fully separate from the stock electrical system to protect normal function
Combined fuse/relay box not necessarily needed. Not all circuits will require a relay
100A Breaker rather than a fuse-able link allows for easily de-powering the circuit for maintenance
Split main fuse block allows for 6 circuits to be powered 24/7 while the other 6 are only powered after ignition
Dometic fridge requires intermittent power overnight to remain fully cold, rear panel with DC socket will allow for this as well as extra accessories
Re-working switch panel to have all switches on a separate circuit rather than being in series allows for better circuit protection
Most of the rear panel circuits will be exposed to the elements, more protection is necessary
Any accessories that have inline fuses should be rewired to use the main fuse block
Safer to have the fuse directly at the power source
Any failures can be quickly found
Full Build Process
Full Build Process
Components
Components
Main 12 Circuit (Split) Blue Sea Fuse Block
6 circuits constant hot
6 circuits powered on ignition
Rear 6 Circuit Blue Sea Fuse Block
Optima Yellowtop Deep Cycle Battery
100A Circuit Breaker
Aluminum 5 gang marine rocker switch panel with Dual USB slot, Volt Meter, and DC Socket
Misc. gauge wiring
Equipment
Equipment
Viair 400H air compressor
Side mirror 15W (x2) defroster heating pads
AuxBeam 18W (x2) LED Flood Lights
Dometic CF-35 DC-Powered fridge
LED 5A Flex Strip
Future Additions
Future Additions
100A High Current Relay to separate ignition circuit
Dual Battery with Blue Sea ML-ACR Automatic Charging Relay
Solar circuit
Onboard water pump
LED Light Bar
Build
Build
Main Block
Install main Blue Sea fuse block and connect to battery through 100A breaker
Re-wire Viair 400H to remove the stock inline fuse in order to use the main fuse block
Install side mirror defroster pads onto mirrors
Install Auxbeam flood lights with wiring harness and relay
Connect all to the Blue Sea main block
Organize wiring with wire loom
Blue Sea Fuse Block Installed with Breaker
Ditch Lights Installed
Compressor Mounted and Wiring Installed (Before Adding Loom)
Wiring Organized with Loom
Rear Switch Panel
Test fit the switch panel and cut with Dremel as needed
Re-wire switches to use separate circuits rather than wired in series as they came
Remove LED wiring for panel stats lights, leaving individual switch status lights
Install Blue Sea block inside quarter panel
Organize wiring with wire loom
Test Fit
Re-work wiring with Blue Sea
Fuse Block Installed
Final Install
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