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Post by scooterpookin on Apr 27, 2015 21:24:21 GMT -5
I bought a RPM gauge from eBay to help me do adjustments and general maintenance on the scoot. Just don't know where to wire it up exactly! Haha Here's the gauge:    Anybody ever used this gauge? |
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Post by geh3333 on Apr 27, 2015 21:40:03 GMT -5
Were there any instructions?
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Post by geh3333 on Apr 27, 2015 21:45:05 GMT -5
Well , I'd say green is ground , red and yellow , one is for the illumination and one is for the actual rpm reading. Black , might be another ground . maybe each power wire " red and yellow " needs its own ground .
Don't take my word on this , wait until someone else chimes in .
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Post by rcq92130 on Apr 27, 2015 22:13:45 GMT -5
I bought a RPM gauge from eBay to help me do adjustments and general maintenance on the scoot. Just don't know where to wire it up exactly! Haha Here's the gauge: Anybody ever used this gauge? You have a fuel gauge there on the bottom (or maybe a clock). If a fuel guage at least one wire is to the sending unit (maybe two, unless it uses a common ground. Of course there will be a +12v and a ground wire (usually green). The key is the "sensor" wire to receive impulses from the ignition so the thing can calculate the RPM. I have the same one WITHOUT the fuel gauge. Spent a lot of wasted time trying to figure out where the 'sensor' wire attaches. Turns out it needs to be spliced into the INPUT to the CDI (the wire from the pickup module beside the flywheel). Another (similar) one on FleaBay said this: Red line -- Positive Black line -- Negative Green line -- Speed Signal (that means CDI)Yellow line connected the center from the ignition switch to the positive battery |
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Post by geh3333 on Apr 27, 2015 22:44:57 GMT -5
He can hook the line for the fuel gauge up with the line coming from the fuel sensor unit.
I didn't even notice the fuel gauge.
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Post by geh3333 on Apr 27, 2015 22:46:46 GMT -5
Main thing is figuring out which wire is what. Hopefully it at least came with some type of instructions labeling the wires.
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Post by dmartin95 on Apr 28, 2015 15:17:18 GMT -5
I bought a RPM gauge from eBay to help me do adjustments and general maintenance on the scoot. Just don't know where to wire it up exactly! Haha Here's the gauge: Anybody ever used this gauge? You are going to have one wire hooked up to fuel circuit signal,.. The fuel sender acts kind of like a potentiometer, as to where your tach is going send a pulse signal..... DONT GET THEM SWITCHED BACKWARDS. The two will share the same ground and switched power source... That all 4 wires.... But...... Problem is, without a wiring diagram, I can not tell you what wire is what.... If you produce a wiring diagram I can tell you how to install it no problem...... If I were to guess without a wiring Diagram, I would do it like this: Red - Switched 12V + Black - Ground Green - Tach inmput (locate the black and yellow wire at your coil to CDI) Yellow - Fuel sender unit.... Take note, Your stock fuel sender will have 3 wires, but your new gauge will get it's own ground and power from the shared tachometer power and ground source. So, you will have wires that now no longer go to anything... Cap off unused wires. Your gauge is not for oil, it's for gas. |
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Post by scooterpookin on Apr 29, 2015 18:01:23 GMT -5
Sorry I got tied up yesterday thanks for all the responses. Unfortunately it didn't come with instructions. Just gotta mess around until I get it right.
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Post by scooterpookin on Apr 29, 2015 18:13:08 GMT -5
Strike that i found this in the detail section on eBay
Red=Positive，
Black=Negtive，
Green=Tachometer Signal，
Yellow=Oil Signal (but really fuel)
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Post by jerseyboy on Apr 29, 2015 20:05:56 GMT -5
The red wire looks like it has a mini trimmer pot on it,,wonder what thats for?
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Post by scooterpookin on Apr 29, 2015 22:24:42 GMT -5
Yea I was wondering what it was too? It looks like one wire (second picture) but it's actually two wires (bottom left 1st picture)
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Post by jerseyboy on Apr 30, 2015 6:51:26 GMT -5
Yea I was wondering what it was too? It looks like one wire (second picture) but it's actually two wires (bottom left 1st picture) Well its a variable resistor to calibrate or tweak one of the functions,I bet its for tweaking the RPM.If you have a small engine shop near you with a good clip on gauge you could calibrate your new one to it is my guess. |
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Post by scooterpookin on Apr 30, 2015 10:18:31 GMT -5
Yea I was wondering what it was too? It looks like one wire (second picture) but it's actually two wires (bottom left 1st picture) Well its a variable resistor to calibrate or tweak one of the functions,I bet its for tweaking the RPM.If you have a small engine shop near you with a good clip on gauge you could calibrate your new one to it is my guess. Oh ok i see, but for everyday use I can just let it hang I don't really need it hooked up to anything? |
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Post by dmartin95 on Apr 30, 2015 11:00:57 GMT -5
Well its a variable resistor to calibrate or tweak one of the functions,I bet its for tweaking the RPM.If you have a small engine shop near you with a good clip on gauge you could calibrate your new one to it is my guess. Oh ok i see, but for everyday use I can just let it hang I don't really need it hooked up to anything? A lot of Tachometer have a selector switch which allows you to select between the amount of cylinders. |
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Post by scooterpookin on Apr 30, 2015 11:59:52 GMT -5
So here's where I'm at now got it all hooked up it powers up nicely. RPM green wire to black yellow wire from Cdi. Works great only thing now is my fuel reading doesn't seem to be working.
Stock fuel sensor:
black(power) yellow (fuel), and BlueWhite (?)
New fuel sensor:
red goes to black power. Black goes to ground. Green goes to Cdi and yellow goes to yellow. What of the BlueWhite?
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