Posi-Lock Universal Blade (ATC / ATO) Fuse Holder
The old Hondas we support, even the later model inline fours like the CB550 and CB750, had extremely rudimentary and often inadequate electrical systems. One of the weaker points of every vintage bike's electrical system was the fuses. These old bikes used glass tube fuses in either a single, tubular plastic holder (the older, smaller bikes) or in multi-position fuse blocks (later, larger bikes). Glass fuses have been obsolete for decades, ever since the plastic blade-style fuses became standard equipment on cars and bikes in the mid- to late-80s. They're extremely hard to find these days, and are more prone to breakage and general failure than the more robust blade fuses.
Replacing the glass fuses and old, disintegrating fuse holders on your bike is one of the easiest ways to improve its reliability, and the easiest way to replace them is with these Posi-Lock blade fuse holders. All you need to do is strip some wires and screw everything together to have upgraded, thoroughly modern fuses. These fuse holders can be installed on any of the bikes we support in minutes with simple tools. The smaller bikes—the various singles and twins like the CB100, CB200, CB350, and CB450—use a single 15A fuse in a plastic holder that can easily be swapped for a single Posi-Lock holder. For later bikes equipped with fuse blocks that use multiple fuses with different amp ratings—the CB360, for example, or the CB750F Supersport—multiple Posi-Lock holders are required.
NOTE: Our Posi-Lock blade fuse holders are sold separately and work with wires ranging from 14 through 24 gauge. Most wires in a vintage Honda's wiring harness are 16 gauge. If you'd rather keep your bike stock, we sell a universal glass fuse holder.
Strip about 1/4" (6 mm) of insulation off each end of the wire, insert the threaded caps over the ends of the wire and slightly fan out the loose strands of wire. Do not twist the ends of the wire prior to installing them in the threaded cap. Install the cap and wire into the body of the lock and begin to thread the cap in place, while keeping pressure on the wire while tightening the cap to the body. Once snug, give the wire a gentle tug to see if it has locked properly, it should not move or pull out. If it does try again, you may need to strip just a hair more of insulation off the wire. Insert your fuse until it clicks in place and makes contact and that is it! You have now upgraded your bike to use modern blade ATC / ATO fuses.
