Admittedly, I have gotten handy enough to take on completely previously unfamiliar tasks, and I proudly state this Vapor gauge install is one such example. I am no trained mechanic -- just an ordinary DIYer who watched the three part video installation series on YouTube by 49ccScoot and went from there.Since picking up a used Boom Revolution 50cc scooter off Craigslist for my 16 year old son, the instrument panel is one item that has irked me (see analog before picture). Perhaps this is because all my other modern motorcycles have digital speedometers and I just expect that now. But it is also because the Chinese gauge reads distance in Km and primary speed in Km/h and runs 15 mph too fast. So I asked Caesar aka SmallEngineVelocity of YouTube fame what's out there for a scooter digital gauge, and he pointed me to the Trail Tech Vapor. Specifically, I bought the 10mm CHT sensor version compatible with the small spark plug of the scooter. Single biggest competitor per my research would be the Koso DB-01RN which has a gas gauge and built in indicator lights but whose shape is more irregular vs my Chinese OEM.The hardest part of this install on this scooter is the mount as there are no connection points nor external visible handlebar. The previous gauge panel simply pops up through a cutout in the plastic dash, screwed in underneath. I took suggestions from 49ccscoot.com who has a page dedicated to the Vapor installation, specifically for a 50cc TaoTao. My approach is the one he used, perhaps slightly modified. For one, he used individual blue/green LEDs off Amazon for the brights/blinker lights, whereas I used the now available VAPOR INDICATOR DASHBOARD kit 022-PDA by Trail Tech which does the same thing but prettier. Fortunately, the dash kit fits PERFECTLY in the cut out of the old gauge. I too used 1/4" black ABS plastic (12" 'x12" sheet off Amazon) and cut out a template based on the shape cutout which I traced onto the ABS and then cut out with a rotary tool with saw blade. Differently, I used JB Weld quick dry epoxy with some clamps to adhere the ABS to the underside of the gauge space. This set within one minute and cured in one hour with no visible mess underneath unlike his installation. The next tricky step is to precisely mark cutouts for the connection wires, the two holes for the 4 mm screws which attach the Vapor to the ABS, and the holes for the indicator lights. Taking some additional measurements around the wire cluster, I traced my template onto paper and worked the cutouts from there, and I then transferred the paper template to the ABS and cut/drilled.Like the original Boom gauge, I have connected the brights indicator light (blue upper left) and turn lights indicator (upper right). The original gauge had one extra bulb controlled by a handlebar switch to light up the OEM gauge panel at night, so I thought wouldn't it be cool to install a complete RGB LED undercarriage light kit connected to this switch. But note, this positive wire only puts out 1V. Since the LED kit needs 12V, I will need to tap the positive switchable ignition wire as usual. This LED kit is also brake activated turning the entire bike RED when the brakes are depressed (see ASIN B085TG95NB).It is worth noting that most instructions for the tachometer wire instruct wrapping the red wire around the ignition coil five times. A much better and more reliable suggestion is to simply tap the positive wire coming out of the coil connector. I have installed a racing ignition coil off Amazon which has a negative green wire and a positive black wire. I used a simple wire tap to the positive, and the tachometer works flawlessly, reading approximately 3-4 on idle and up to 8-9 at max speed (is this true RPM? Not sure...)Yes, it is true the Trail Tech Vapor does not have a gas gauge as did the OEM gauge. 49ccscoot.com says you can use the trip odometer as a method assuming you know how many miles/tank you get and plan to fill up as you approach that distance. BUT I have just ordered a separate digital gas gauge, the Koso Mini 3 - Gas, which I plan on simply velcroing above the Vapor as it is very small (3x6 cm) yet has a 10 bar digital readout. Both the original gauge and the Koso have three simple wires (+, -, fuel resistance) which should be a very easy connection to the three wire harness from the disconnected gauge. That Koso gauge is shipping from Italy as it was not available in the US.Speed calibration: I used the sole magnet epoxied onto the brake caliper which seems to be perfect. After inputting wheel circumference per the calculator on 49ccscoot.com, I did an 11 mile test run and the Vapor was slow by about 10 mph. Using another calculator, I re-input the recalibration calculation using circumference, Vapor mileage, and GPS mileage, re-ran the 11 mile route, and the gauge was within 0.1 miles. Final recalculation was a minimal wheel circumference change. I'm sure speed is now spot on.Temperature CHT: I had to order the 48 in. wire extension off trailtech.com as only a 24 in. extension exists on Amazon, and you will need a 48 in extension. Engine temperature reads perfectly.All in all, I am very happy with the result for this Trail Tech Vapor. Please see my before and after pics which speak for themselves. Installations like these do take some handiness, but again, I'm just an ordinary DIYer who learns off YouTube and uses his head. You too can turn your antiquated analog Chinese scooter gauge into a modern digital one with tons of added data using this highly rated, attractive white back-lit, and hopefully reliable Trail Tech Vapor with Indicator Dashboard.Update 10/1/20: Koso Mini-3 Fuel Gauge and Tachico LED light kit now both installed per pics attached. Everything installed perfectly and turned out awesome!