Trunk Mounted Auxillary Fuse Panel

The process of adding electrical farkles to the wing means that you have to connect them to power. For me the idea of buying a $200 gizmo just to hold a fuse was not an option. I went with a standard looking six postion box that offers both positive and negative distribution points. I'm sure it's available all over the web, but I purchased mine from Amazon. It was under $16 and came with an assortment of fuses and labels. The farkles I'm powering are all low current toys so having brass fittings with monster connections isn't a requirement.

Removing the upper section of the rear seat is easy and allows a better view of the existing wiring paths. After a little investigation, I concluded that the best spot for this was the trunk, easy access and easy installation. It's secured to the front wall of the trunk with automotive plastic velcro (like the kind EasyPass uses). It's referred to as Extreme Mounting Fastener Mounting Strips. Due to the slant of the trunk front, I had to use 1/2 double sided foam to pack out the area behind the lower edge of the panel. I can't say where my it came from other than its been in my "collection" for years. Anything solid thats about a half inch thick and the width of the fuse block should work. Just make sure its not porus or the velcro adheasive will not stick.

Drilling the hole for access wasn't done without checking and rechecking for clearance. A 3/4" hole saw on a 90 degree drill was used to get as plumb of a hole as close to the front wall as possible. The hole ended up a little oblong, but that's not an issue. 10 awg wire connects the panel to a sealed Bosch Type SPDT relay that is powered from the aux terminals at the OEM fuse box. I decided to use a socket for the relay and to heat shrink the relay and socket together for good measure. Both the coil and the socket came from Cycleterminal.com The relay coil connections also have a kickback diode (1N4002) across them to shunt any reverse voltage created when the relay disengages. It's heat shrunk and wired into the socket.

When the bike is off, the 87a terminal of the relay is connected to the battery. This allows for a SAE connector for charging the battery. If you like to use the SAE connector while the bike is running then just connect it to the positive battery terminal!

20 Amp Main fuse and 5 amp charger fuse!
The bottom hole is saddlebag plunger access
EASY access new hole
Red and black in center are new!

Both the relay and the ATC fuse holder had their mounting tabs removed to allow them to fit in the space above the battery and behind the frame. The relay is double heat shrunk for water protection. You can see it in is final spot just behind and to the right of the fuse holder. Its wires are to the left and behind the fuse holder.

.
Mounting tab is removed from relay.
Click the picture to see the hiding spot for the relay.
.
Yellow highlights the slight modificaiton needed to allow the 10 AWG wire to exit the side of the fuse block vs going out the top and the bottom. A small round file will cut through the plastic easily.
Grommet in place before FB is mounted.
Service loops for later access if needed.
All wired and ready to go.
Cover is on, carpet is back in. Start it up and GO!
K2mpw at yaa who? Dot com
01/07/21