Auxiliary Fuse Block

    • 130 posts
    August 8, 2011 1:25 PM PDT




    While trying to put my crapatorium in some kind of order, I was sidetracked by a pair of small running lights bro Curtis (mrider) had given me, a while back.  A little tinkering demystified their workings and a couple of  H3 bulbs later they were beaming like they'd just won First Prize for something.



    So,  I had two perfectly good running lights that I had no plan to use.  However, there's been a time or two when  I'd  wished I'd had better illumination to my right so I bent a bracket from scrap aluminum and prepared to wire up  one of the lights with wire salvaged from a heavy-duty extension cord. 

    Since the wire was no smaller than 20 ga I intended to connect directly to the battery; the only thing I needed was a toggle switch.

    But, seeing as how running lights in the saddlebags got power from wiring harness
    aux circuit, and the Stebel air horn was tied in to the fusible link;  I reckoned that this was as good a time as any to do a little housekeeping. An auxiliary fuse block would neaten things up nicely.  I put the light on hold.



    I read a few discussions on VTX and Valkyrie owner’s websites on the subject, then headed into town for
    parts.  At Auto Zone I picked up a six post fuse block for under $10 and Radio Shack sold me a 30A automotive power relay for just over $6.
    The relay was to be wired into the bike’s aux circuit so  the new fuse block would not energize without the ignition switch
    being in the "On" position.
    Note that the wire from the battery to the relay  incorporates a 30 amp fuse in an in-line holder.


    I glued the relay onto the back of the fuse block with 3M Emblem and Trim Adhesive. My intention was to affix the fuse block to the fusible link cover with industrial strength "velcro"; I'd forgotten that there is danged little that will adhere to ABS plastic.
    My
    solution was to drill the cover and run nylon screws from the inside, through the mounting holes in the fuse block.



    The nylon nuts sucked down into the dimples on the fuse block like it was custom crafted.





    The rear running lights were put on a post, freeing up the aux circuit to operate the relay.

    I was able to move the horn relay to the front if the battery box (under the seat) and grounded it to a frame tab that mounts the battery box. The old positive, including an in-line fuse holder, was removed from the fusible link and a new one attached to the aux fuse block.






    Now, about that running light:  I ran the wires under the fuel tank, grounding at a frame tab that secures the air box.  The hot wire was to run to a toggle switch that I hoped to mount inconspicuously on the left side, without drilling anything.
    That hope was
    dashed.  After mulling the problem over several cups of coffee I realized that there is lots of space in, and on, the saddlebags.

    I abandoned the snazzy toggle switch I'd purchased in town and went with a very small one salvaged from a floor fan.



     A small square hole was cut with my trusty Dremel tool and, zip-pop, installation.   The wires run through the same hole as the ones for the turn signals. The switch is inconspicuous and accessible but it's final test will come when the Sexy Granny packs for a ride.



    Bench testing complete, I'm ready for the field.


    • 3006 posts
    August 8, 2011 2:50 PM PDT
    Seems like the more I learn about things electrical the less I feel like I know whats going on !!
    After reading this,I have a better grasp of doing an install like this,its a good write up on a mod I could do with my own bike.
    The pics are great too,thanks for sharing this !
    • 130 posts
    August 8, 2011 5:49 PM PDT
    blurplebuzz wrote...
    Seems like the more I learn about things electrical the less I feel like I know whats going on !!
    After reading this,I have a better grasp of doing an install like this,its a good write up on a mod I could do with my own bike.
    The pics are great too,thanks for sharing this !


    This wasn't much in the way of technical info but there are  a lot of easy to understand articles on the Net for simple wiring projects like horns or light bars.  Adding a light bar directly to your headlight circuit can burn out your starter button, for instance.  Using a relay lets driving lights get power directly from the battery on heavier wire while using the dimmer switch  to determine if they come on with  the high or low beam.

    Of course, you'll want  extra circuits so you can   add a stereo, GPS, satellite radio, on-board compressor, heated grips, foot massager... 
    • 3006 posts
    August 9, 2011 3:22 AM PDT
    LOL yeah 2 thumbs up on the foot massager action !!! Now if I can just git the proper accessorys for my swthrt on back
    • 5420 posts
    August 10, 2011 5:11 PM PDT
    Nice work...  amazing what you can do without spending a lot of money if you just put some thought into it.

    "Of course, you'll want  extra circuits so you can   add a stereo, GPS, satellite radio, on-board compressor, heated grips, foot massager... "

    don't forget the coffee maker!!!!
    • 844 posts
    August 11, 2011 9:01 AM PDT
    Gotta love a bike that will never be finished. Like riding a new bike all the time. Good work brother.