
It’s been a while since I’ve seen a 750cc GPZ, I thought wistfully.
The sound of “750cc” just has a nice ring to it.
So for the summer, we’ve got a request for a forced fan switch, water temperature gauge, and USB installation.


First, I want to install the forced fan switch.
Lately Daytona has been releasing a lot of sharp hit products.
Picking one from among them Slender switch 79339


It’s thin so it fits nicely in tight spaces—wonderful design. The plastic body is very Daytona-like.
The quality matches the price, so don’t expect too much.

Amazingly rated for 15A (180W). Well, there’s probably no such device on a motorcycle…
Bigger is better, or so some wise person said long ago.

It supports 22.2/25.4mm diameter, but… it’s rubber shims, right?
It would’ve been better if it were a C-shaped rubber or something… it’s such a pain to install.
The nice thing is you can operate the fan while holding the handlebars.


I ended up buying it—part of the “I bought it!” series—so with a “waste not” spirit, I decided to use it anyway…
But the angle is way too steep… hmm…
People who install aftermarket parts on off-the-shelf products must have a really tough time…
Making it from scratch would be faster and cleaner, but… with DIY and mass-market retailers, that’s not an option.


I bent it back a bit and made a collar with a slight recess in plastic dimensions, and that’s it—installation complete.


3M Dual Lock fastener 25.4mm × cut to length [SJ-4570]
Thin with just the right amount of holding power, perfect for securing motorcycle electrical components.
The adhesive residue is also easy to clean up.

Daytona AQUAPROVA (Aquaprova) motorcycle oil/water/voltage meter digital waterproof backlit HG series temp meter 72813
Installation time.
Constant 12V, ON 12V, and ground acquisition are needed for installation. I wish it had a battery option instead of constant 12V…
It subtly increases both risk and hassle.

It’s a good idea to put a sponge under the battery nut.
Actually, I’d say you really should.


If you’re pulling constant 12V, adding a fuse really boosts your peace of mind.
This handy fuse (also Daytona, but…) 96231
You might think “the bike already has a main fuse, so we’re fine,” but… if you look closely, you’ll see…
Vehicle fires caused by battery positive terminal shared connections are definitely a thing.
Honestly, a lot of people have crazy octopus-style wiring on their terminals. (;∀;)

I found the remains of a multi-tap that had been removed.
It was almost torn off—just barely made it.
Multi-tap (wiring connector) —these usually come included, but I’m pretty sure you shouldn’t use them.


That’s it—installation complete. I got the water temperature sensor from the stock location this time. If you want to see the meter panel one too, the best time is during a coolant change.
The white text on the black panel is easy to read, but it might be a bit hard to see in daylight. A slight anti-glare film on the surface might help. (The surface is maybe too shiny?)
By the way, I couldn’t adjust the brightness.


Main ON works fine and the USB operates without issues. I also charged the battery.


The tank was already off so it wasn’t much work, so I did the synchronization and PS adjustment.
With the 4-2-1 exhaust, it feels noticeably more solid now.

All done! (‘ω’)ノ
