New Accessory Electrical System Parts

So I finally have all the parts to rebuild my axillary electrical system for the FJ Cruiser. I was using Blue Sea fuse boxes but I have found a much better box for Automotive applications. The system is being designed to run off an axillary battery system with both switched and unswitched applications. I will have a fuse box under the hood, 1 in the passenger compartment and one at the rear off the FJ.

Here is my list of systems that the auxiliary power system will control:

Under the hood:


  1. Winch Control
  2. Fog Lights
  3. Rock Lights
  4. Spot Lights / Off-Road lights
  5. Rear Fog Lights
  6. Inside Front Fuse Box
  7. Inside Rear Fuse Box


  1. Inside Front Fuse Box
  2. Inside Rear Fuse Box
  3. Master Power Solenoid
  4. Under hood Accessory Plug (Used for work light)

Inside Front Fuse Box


  1. Flash Light
  2. CB Radio
  3. Computer / GPS
  4. Fog Light Switch
  5. Backup light switch
  6. Rock lights switch
  7. Spot Lights switch
  8. Rear Fog Lights


  1. Accessory Plug
  2. Map Lights

Inside Rear Fuse Box


  1. Ham Radio
  2. APRS Radio
  3. TNC


  1. ARB Fridge
  2. Accessory Plugs

Listed here are all the parts that I will be using the rebuild the system:

8 – Carling Contura Switches (I will be adding my own decals to the switches)

2 – Daystar 4 Position Jeep Switch Panels – I will be modifying this for the FJ application.

2 – Bussmann 20 position Fuse boxes – These have 14 fuses on one bus and 6 on another.

1 – Hella 8 position fuse box x 1

2 – Blue Sea Maxi fuse holders

1- Hella 4 position relay box

1 – Blue Sea Solenoid Model 9012. This solenoid has special electronics that cause the coil to only draw 0.13 amp to hold. This solenoid will be control the switched power.

1 – Hellroaring Technologies Battery Isolator/ Charge Controller

1 – ACS Solar charge Controller

Specialty Concepts ASC-12/4 12V, 4A Solar Charge Controller

1- 15 Watt Solar Panel

1 – Odyssey PC925 28 ah Battery




Tomas has lived in Colorado since age 5. Having grown up on the Western Slope of Colorado lots of time was spent in the Desert Southwest. Tomas' father introduced him to the love of 4 wheeling at an early age in the high mountains around Aspen, Colorado. While an avid Mountain Biker, Tomas and his Family enjoy adventures in the mountains and desert in the remote locations that can only be reached by 4wd. Day hikes are always a must when on the family trips. While enjoying outdoor activities he wants to share his love as a certified 4wd trainer and ski instructor. Tomas also enjoys caving and cave exploration. Tomas currently resides in Colorado Springs. 

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