Reddit reviews MICTUNING MIC-VM DC 12V LED Display Voltmeter Waterproof for Boat Marine Vehicle Motorcycle Truck ATV UTV Car Camper Caravan Blue Digital Round Panel
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It works for 12v-24v, mini size and easy to install, work great for checking voltage, not recommend to use the voltmeter in a 24V car like truck/ lawnmowerTwist-and-lock system Display: 3-bits, LED digital tube, Lamp display is BlueUniversal for: motorbike car/ boat/ ATV/ UTV/ camper/ caravans/ travel trailer etc.Mounts in a 1-1/8" hole in panels up, 025" thick, a nylon retaining nut holds the meter in placeFit most of applications, such as: marine cockpits, Caravan applications, trucks, 4x4S and RV's MICTUNING voltmeter is high quality with completive price, it's the best choice for your battery
Parts list:
Motor and drive train combo: 2 x 550 30000RPM Gearbox with 12V Motor,Electric Motor with Gear Box for Kids Electric Cars and Motorcycles High Speed RS550 Drive Engine Match Children's Ride on Cars https://www.amazon.com/dp/B076Q3XTWB/ref=cm_sw_r_cp_api_i_PiZADbZK937A2
Transmission to wheel adapter: Transmission Gear External Gear Accessories Connect Gearbox Motor and Wheels for Kids Powered Ride-Ons, 550 Gearbox Accessories Kids Ride On Car Replacement Parts E https://www.amazon.com/dp/B076HW2W98/ref=cm_sw_r_cp_api_i_TlZADbWF68M45
Variable speed controller: RioRand 7-80V PWM DC Motor Speed Controller Switch 30A https://www.amazon.com/dp/B071NQ5G71/ref=cm_sw_r_cp_api_i_LjZADbQSB11QY
Connectors: Amass 10 Pair XT60H Bullet Connector Plug Upgrated of XT60 Sheath Female & Male Gold Plated for RC Parts ... https://www.amazon.com/dp/B074PN6N4K/ref=cm_sw_r_cp_api_i_nkZADbG4NVM0E
Spade connectors: Supco T1112 Quick Disconnect, High Temperature, 12-10 Gauge, 1/4" Female Tab (Pack of 15) https://www.amazon.com/dp/B0071NC78C/ref=cm_sw_r_cp_api_i_olZADbX56T2WB
Battery terminal: https://www.ereplacementparts.com/contact-plate-holder-p-154719.html?osCsid=ijjl2im5cg4p7n3dm3k1cbpjv6
Voltage meter: MICTUNING MIC-VM DC 12V LED... https://www.amazon.com/dp/B078LVLHNF?ref=ppx_pop_mob_ap_share
Note: no affiliate links. All straight links!!!
This all started off with my wife saying that Lightning was a little too slow! I said no problem I got this.
So my first step was to investigate what was the best way to go about this. After a while of researching the best way, I realized that they are more or less oversized versions of my rc cars that I race. With that in mind I was able to do everything.
I started the conversion using just one of the motors. This was so I could make sure I was mentally doing it all right. While the transmission was close to the stock one, it was not a exact fit. I ended up having to trim away some extra plastic and make the opening larger.
Now that the motor and trans is in for the right side I had to start looking at the wiring. The wiring that is in there stock was 18 gauge and while technically will handle the 18v I wanted to be sure we did not melt any wires. I swapped it out one by one using the same 12 gauge wire I use in my RC cars.
The first wires I did was the battery connector. I found the connectors online and used a epoxy putty to make the socket. This ensures the connection is good to the battery.
I then proceeded to replace wires in the harness one by one till they were all replaced. Once it was all setup stock it was time to add in the speed controller. This allows me to turn the speed down (by adjusting the voltage.) I put it online between the battery and the rest of the wire harness. I did it here because it was not able to handle flipping the polarity for reverse. (Popped a fuse finding that out lol. )
Once this was wired up I was able to add in the “fuel gauge”. I put it in what is the “gas cap” on the car. This is a simple dc voltage meter. Nothing fancy here.
Once all that was wired. I needed to make a “Y” splitter for the motors. I know this puts them in parallel all the time and down the road I might change that but for now just forward and reverse was good enough.
Since this car was a single drive motor previously I had to completely make a new hole for this second motor. This was a bit simpler then making room for the first motor.
One thing to note on wiring the second motor. You will want to do it in reverse of the first one as it is spinning the opposite direction of the first motor.
After this was done they only thing I did was relocate the dial for the speed controller from on the speed controller to on the back of the car under the rear fender. This was so I can adjust it without having to remove the seat to adjust it. One thing I may still add is a master power switch. I know this car has one but due to positioning I had to put the battery meter before that switch.
One thing that is still a work in progress is I bought a mltoys brake reduction system. The problem is I was not sure which wire it should go to. This is not the typical plunger switch gas peddle. It is a 6 poll rocker switch. Once they get back to me with that I will get it installed so it is not as jerky on starts and stops.