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Post by beaverhausen on Jun 19, 2017 12:20:43 GMT -5
Hi there I just stumbled upon this forum while image searching wiring diagrams. I've been at it for DAYS and I can't find one exactly like my little scooter. If I knew what kind of scooter mine is, the finding of the diagram would probably be easier. Unfortunately, there's no name of any kind anywhere on it. The plastics are old... Faded and brittle the only thing I have to go on is the VIN number which led me to "Shanghai Maitan" for a manufacturer... Either way, I could really use some help identifying this little bugger so I can get on with getting a friggin spark out of that plug...
This is my first post so I'm not 100% on posting pics yet. The thing that is different about this scooter from most that I've seen, though, is the auto by start(aka enrichment module aka electric choke) resistor has a red wire and the smaller resistor attached has* a black wire coming off of it. Also the horn button has a red wire and every diagram I've seen has 2 green to the horn.. So yeah. That's what I'm knee deep in ATM. sorry for the novel. I really want to ride this little bugger and I'm a week into trying to get it to spark... Thanks in advance, even if all you do is read this.
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Post by beaverhausen on Jun 19, 2017 12:26:30 GMT -5
Oooh i forgot.. the cover on the kick starter side of the scooter has "G M I" (or "G.M.I."?) on it in really big letters. Thought that might help
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Post by Elektrey on Jun 19, 2017 13:06:17 GMT -5
does it look like this?  What symptoms are you having? what have you done to try to get spark? when was the last time it ran and why did it stop? |
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Post by aeroxbud on Jun 19, 2017 13:19:54 GMT -5
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Post by beaverhausen on Jun 19, 2017 13:57:38 GMT -5
does it look like this? ... OHMIGOSH, YES! (except for the color, the awesome trunk space on that one, and mine has a way bigger muffler. Not to mention the shape of mine - it is really poor cosmetically.) but, yes, nearly identical model! You're awesome! What symptoms are you having? **basically, I can't get the plug to spark** what have you done to try to get spark? *Plugged everything in as I was told it needed to be plugged in, but then the push button never worked, and shorting the solenoid produced no kind of response from the scooter, so, I did the following: *Replaced the CDI, after which the push button would try to do its job intermittently, but without spark still. Hitting solenoid with screwdriver would again get it to try, but no spark. *Replaced pulse generator- no change in inconsistent results with push button, so then... *Looked up a million wiring diagrams, took the whole front harness off of the scooter, de soldered all the solder points Till it was a seeming pile of scrap pieces, put it back together, reinstalled it- now the brake switches and kill switch and main switch and horn and most of the lights work as they should (yay!) But alas, no spark . Oh and also just got done testing the stator, CDI output, and coil with the multimeter following instructions from another site, stator passed, CDI passed, trigger wire passed. The coil I dunno if I had my multi meter set correctly or not. There's the very long and the short of it. (I think) Thanks by the way for replying so quickly and so awesomely! when was the last time it ran and why did it stop? Oh, I'm not sure exactly how long it's been but it's been years. At least 3 judging from the yellowjacket population that had to be decimated to even get near it lol. Not sure why it stopped or if it's just not been ridden for a while, having never actually "stopped"😁 |
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Post by beaverhausen on Jun 19, 2017 14:00:03 GMT -5
Thanks very much I had given up on the instructions there but went to look again just now thanks to you and noticed it says PC mode helps with uploading. !! It's gonna be a good day, tater. Lol cheers! |
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Post by beaverhausen on Jun 19, 2017 15:30:42 GMT -5
What symptoms are you having? what have you done to try to get spark? when was the last time it ran and why did it stop?  Idk if I did that right but I've been considering getting a different type of CDI and I've been hesitant to do so... But the website that stocks all these parts for this scooter have both kinds for sale as GMI104 parts? Thoughts? |
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Post by Senna1Rossi on Jun 19, 2017 16:03:01 GMT -5
Welcome.
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Post by Elektrey on Jun 19, 2017 17:18:28 GMT -5
does it look like this? ... OHMIGOSH, YES! (except for the color, the awesome trunk space on that one, and mine has a way bigger muffler. Not to mention the shape of mine - it is really poor cosmetically.) but, yes, nearly identical model! You're awesome! In that case it's probably got a GY6 engine in it and is a basic standard GY6 49cc with the "Sunny" style plasticsWhat symptoms are you having? **basically, I can't get the plug to spark** what have you done to try to get spark? *Plugged everything in as I was told it needed to be plugged in, but then the push button never worked So it worked before you plugged everything in? Was stuff unplugged? Plugged in the wrong place? How's the battery? Low/dead battery causing the starter to not turn over?, and shorting the solenoid produced no kind of response from the scooter, so, I did the following: *Replaced the CDI, after which the push button would try to do its job intermittently, but without spark still. Hitting solenoid with screwdriver would again get it to try, but no spark. *Replaced pulse generator- no change in inconsistent results with push button, so then... *Looked up a million wiring diagrams, took the whole front harness off of the scooter, de soldered all the solder points Till it was a seeming pile of scrap pieces, put it back together, reinstalled it- now the brake switches and kill switch and main switch and horn and most of the lights work as they should (yay!) But alas, no spark . Oh and also just got done testing the stator, CDI output, and coil with the multimeter following instructions from another site, stator passed, CDI passed, trigger wire passed. The coil I dunno if I had my multi meter set correctly or not. So the motor spins, the trigger wire sends the signal to the CDI, which is charged by the stator and then sends the electricity to the coil which goes to the spark plug.
now if you eliminate the parts which you say are good then that leaves the coil, and the spark plug (and really any wiring connecting these together if you want to check everything).
How's the spark plug? Maybe try a new coil? Should be pretty cheap on ebay, check your engine though just to make sure you've actually got a GY6 before you order parts for a GY6.
There's the very long and the short of it. (I think) Thanks by the way for replying so quickly and so awesomely! when was the last time it ran and why did it stop? Oh, I'm not sure exactly how long it's been but it's been years. At least 3 judging from the yellowjacket population that had to be decimated to even get near it lol. Not sure why it stopped or if it's just not been ridden for a while, having never actually "stopped"😁 What have you done to it since you brought it out of hibernation? new gas, fuel filter, etc.
Idk if I did that right but I've been considering getting a different type of CDI and I've been hesitant to do so... But the website that stocks all these parts for this scooter have both kinds for sale as GMI104 parts? Thoughts? My thoughts are that this GMI104 was made with different wiring harnesses and you have to choose which one has the right connector. If your CDI tests good then why try a different type? Is it possible you got an AC CDI and put it where a DC CDI should go? Not really familiar with GY6 and their electrical systems so maybe someone else here can help with that. |
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Post by beaverhausen on Jun 19, 2017 18:28:44 GMT -5
Hey! So cool of you not to run for the hills on this one! Thanks for hanging out for round two haha
Ok so, when I got the scooter, it was not starting, not trying to. Not anything. Kick-start seemed kind of hopeful, but yeah I've never seen her actually start up. ( I tried the kick starter earlier and I think I'm gonna have to check the gear oil side* before starting her up.
Now, I'm with you on the logical conclusion that either my coil or plug are to blame here, but the only flaw in that logic is that both are parts I've borrowed from my little pit bike, and also, the coil and plug from this little scooter both work fine on the previously mentioned pit bike.
( That little pit bike is about to become a CDI donor, perhaps also)
Umm.. since I've started working on this one, I've mostly been dealing with wiring. But I also changed the oil, removed and flushed the fuel tank (broke the float in the process) ... Um.. oh I've removed and cleaned the carb oh so carefully and yeah, other than knocking the dust* and dead yellowjackets out of her right before all of that, that's about all I've done. Anxiously awaiting your input. Whilst checking the Kickstarter side of the bike , but still, I'll be waiting pretty much anxiously lol .
Thanks again!
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Post by Elektrey on Jun 19, 2017 19:55:11 GMT -5
So you replaced the battery or no?
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Post by beaverhausen on Jun 19, 2017 22:53:35 GMT -5
Lol.... Well... I've tried to replace the battery. I'm on a very tight budget, though, Soo, when payday Rolls around, I'll have to choose between mobile strike packs and scooter parts haha
By the way, I was about to give up for the night and I thought, "why not take these wires from the other CDI and ever so gently cram then into their corresponding locations on the plug connector that goes to the other CDIs I've been trying?"
SHE'S GOT SPARK!!!!
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Post by beaverhausen on Jun 19, 2017 23:01:56 GMT -5
Oooh, Also because of the fact that the coil and plug work on my pit bike but at the same time, I've noticed my pit bike has been getting very temperamental as far as starting up goes, I decided to replace the resistor in the spark plug cap just in case. That spark is REALLY strong!
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Post by jackrides on Jun 19, 2017 23:56:31 GMT -5
Well you've got sticktoitivness. You have what it takes to draw your own wiring diagram. Start with the basics, after the switch pods(like the right and left handlebar switches, which can look bad, although they are really not) just start with several sheets of graph paper (you'll end up taping several together) and just go for it. Use color pencils. When you get to a component you do not understand, draw a large box and accuractly show the color wires coming out. Plan on several beginning diagrams, progressing forward. Start with the battery. Where do the big wires go? Small wires will join in, where do they go? This is one step at a time. Yeah, you'll have some repetition, but that will only reinforce your knowledge.
The one basic you need to know, currant needs a continuous path from the positive battery terminal to the negative battery terminal. Sometimes this path is to use the frame and the engine cases as a common conductor (referred to as 'ground'). That's not best, but it's cheaper and it works. There's more to it, but you can handle it. From my limited scooter experience, the bigest POA is figuring how to get the damn plastic out of the way. I finally realized that one method is to approach the issue clearheaded without caffene. (I didn't say this would be easy, just achievable). This does take focus, not speed.
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Post by beaverhausen on Jun 20, 2017 3:14:43 GMT -5
Hey thank you for that! I actually have been working up a diagram since I posted last, and again, I was about to just throw in the towel for the night... then I read your post, and yeah, I'm gonna draw a darn diagram. Why? Mostly Because I haven't found one yet that matches 100% , but even more because I can't be that person that tears down a wiring harness **All the way**, then solders it back together... But then DOESN'T draw up a diagram! Lol that ain't me haha. Thanks for the encouragement though. If I make anything that is half decent, I'll post right here first lol
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