Z1R Takegawa Digital Fuel Gauge Installation



I’m afraid of building an image of “installing little parts here and there = doing it for you.” Basically, we don’t accept that kind of work.
Custom = custom shop,
fabrication = fabrication shop, right? It’s a different story if you’re ordering a vehicle inspection. That’s the kind of capricious sole proprietor I am.
The fuel gauge just completely died right after I fixed it, so we’re moving into the 21st century with digitalization.
Takegawa = monkey image. Everyone sure does love their patrols.
The shape is like a digital tachometer.
Back in the day, I’d usually just slap a tester on it and call it good.
But as I’ve gotten older, the checklist of “safety, verify, safety, verify” has grown, and now I’m at the point where I won’t do it without a wiring diagram—which is my way of saying I turn down jobs I don’t want to do.

It’s pretty simple: power, ground, and signal (variable resistor). Easy peasy.
I agonized over plans A, B, and C.
• Cheap! Ugly! Double-sided tape mounting → ✗
• Sloppy board double-sided mounting = fixed → ✗
• Spot welding patch strategy → removable
Meter position adjustment becomes difficult → ✗

Suddenly hit a dead end, and I just stood there staring at the fairing with my mouth hanging open. (This part actually takes a long time.)
Why do I basically hate making things?
• Lots of materials needed
• Machine tools required
• Design, functionality, and durability all matter

* In the end, there are problems both before and after making something.
• If it breaks, I’m responsible (industry standard is a year, but people expect more)
• I can’t let people down no matter how they look at it (sorry if I have)
• Thinking time and making time are long
• Sometimes I mess up = have to redo it

That’s the deal. I hope some of this reluctance comes through.
I noticed the fuel gauge shape was round and went “aha!” so I went with a low-profile bolt tack-weld strategy. This way it can move up and down, I thought.
* By the way, the first attempt had the bolt sticking forward and it hit the fairing, so that was a bust… this kind of thing happens a lot.
I made several templates to figure out the meter position. Got it done.
For mounting, 3M Dual Lock (the thin stuff) works great.
The connector had to be waterproof. We were out of the 110-series, so this is kind of a quiet upgrade.
It doesn’t really matter much, but I have my own rule: “with three or more pins, don’t put power and ground next to each other.”
If they get crushed and go pop, it’s the same either way, but it’s maybe 0.1% safer this way… hopefully.
It’s completely adjustable up, down, left, right, and at any angle.
After that, I painstakingly drained all the fuel and checked the remaining amount bit by bit.
Aftermarket parts always have that “don’t need the maker’s name” thing, so a 6mm Tepra label in black fit perfectly.
Hmm, it’s kind of plain. Maybe I should go digital on the voltmeter too?

That wraps up this job.
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