After Mary had flattened her battery twice this week, I promised to wire the heated grips up properly with a relay…
When we first bought Mary’s CBF500 it came with heated grips fitted, but they were installed with no relay, so all too easy to leave on when parking up. After Mary had flattened her battery twice in this manner this week, I promised to wire them up properly with a relay to cut the power when the bike’s ignition is off. However, the heated grips aren’t the only accessory wired in, we have a satnav, USB sockets and probably more gadgets in the future. So, to help simplify stuff, I opted for a secondary fuse/distribution box.
Tapping the rear number plate live is a good choice in case the new circuit causes a short, loosing the number plate light won’t prevent us riding.
A mate happened to have a basic Mictuning 6-way fuse box going spare – perfect for the job. My plan was to tap a switched live feed from the rear number plate light circuit, which would trigger a relay, to feed this fuse box and in turn all of the bike’s gadgets. Tapping the rear number plate live is a good choice in case the new circuit causes a short for any reason, losing the number plate light is no big loss and won’t prevent us from riding. On the CBF500 this light is connected by some bullet connectors behind the rear right-hand fairing panel. I opted to strip back the insulation and solder on a feed, rather than using a Scotch lock which has a reputation for failing. The final join was covered in heat shrink wrap and waterproofed with amalgamating tape.