Yamaha XT250 6 to 12 Volt Conversion Part 2 - Step by Step Guide
Yamaha XT 250 - 6 to 12 Volt conversion: This is the start of a new series, and today we look at a simple way to convert from 6 to 12 Volts. We also discuss the 2 other options you have for improving the lighting on your Yamaha XT.
This first project has been split into 3 parts or episodes to make it easier and simpler to follow along. If you are a complete beginner or have no maintenance or mechanical experience, it’s probably best you start from the beginning…. Part 1.
However, some of you may already have a good level of mechanical competence, so you may choose to skip Part 1 and go straight to Parts 2/3.
The Yamaha XT series will cover many different topics, from simple servicing and maintenance to more complex modifications and restoration.
This is a new series for me, so it is important you let me know, if you enjoy the episodes and if you find them useful / helpful, so please Subscribe and press the Bell notification button (This will help the channel grow and develop), and of course you will be notified when the next episode is uploaded.
Thank you, Carl
00:00 Start
00:33 Headlight replacement
06:30 Refitting the headlight
08:51 Horn Replacement
09:32 Locating the regulator & rectifier
11:11 Locating the relay
13:40 Mounting the new Reg/Rec unit
16:53 Other issues to check for
18:05 Unexpected Problem !!!!
20:09 Solid State Relay installed
Great video! I've been wanting to do this to my 1982 XT250 for a couple of years, and with the help of your guide I finally got it done! I didn't expect it to be so easy. I've been having an issue though and was hoping maybe you'd know and be able to help me out. Ideally I'd like to run LEDs throughout the whole bike (I don't really mind using halogens for the turn signal as I think they're bright enough.) So currently I've been trying to do just that. I left the turn signals halogen including the turn signal indicator , and I've put in LEDs for the headlight, speedo, high beam indicator, neutral indicator and the brake light. The turn signals, brake light and neutral and turn signal indicators work fine, I'm just having issues with the speedo, high beam indicator and the headlight being way too dim. To the point where I can barely tell that they are on. I'm aware that those three receive power from the yellow wire/magneto. Is there a reason why those one run so dim? What can I do to troubleshoot/resolve this problem? Thank you! Chris
Hi Chris, without physically working on your bike it’s very difficult to advise you. But all ground connections must be perfect All harness connections must be perfect Battery connections must be perfect This needs to be checked using a multimeter. Then check the actual voltage from the Yellow wire circuit . Are all the traditional and LED bulb voltages and wattages correct? Inspect each one and write down the values! Also normally the system output is not enough to run a led headlight bulb. So I would remove that and then test the other lights and see if they are now working correctly and bright. Did you also change the battery, as this needs to be a good quality one. I hope this gives you some area’s to start checking. Carl
Hi, thank you for the video! I am doing a conversion on my 76 xl250.. I cannot seem to find a regulator/rectifier that has the extra wires as you found in this video. I found a 4 wire simplistic one or some expensive ones that have lots of wires. Please advise if possible.
Hi Antony and welcome to the channel. There are lots of Honda forums that cover this in lots of detail. This is a great place to look for what solutions other owners have done with regards to charging systems and upgrades. The 76 XL is a beautiful looking bike and KZhead has several owners that have done this to the K2. Let me know what solution you decide to install…. Best wishes Carl
Which country do you live ?
Nice job...I have the same bike am trying to restore
Thank you, yes this one is in a good condition. Good luck with your restoration project. Carl
Do these bikes depend on battery for ignition or can they start by kickstart without a battery
Battery..... they need to have one.
Okay... thanks man ,any challenge I get I'll inform you
Hello, ive got the 12v conversion kit but it didnt come with the 3 spring clips to fit into the housing. Do you know where i might be able to source these? and what the model/serial number might be for them? Awesome video by the way, very easy to follow :)
Hi Mark welcome to the channel. The headlight clips were supplied with the headlight as a kit. There is no separate part number. Perhaps you can ring the supplier who sold you your kit and ask or maybe you can reuse the original ones with a little bit of adjustment or reshaping. The shape of the new ones was similar so I think you might be able to bend them into shape. Let me know how your project goes Best wishes Carl
Thanks Carl, I managed to get the w clips to fit, thanks again, now back to the rest of it :-)
Hi Mark, that’s great news well done 👍 and I wish you success with the rest of the conversion. Carl
Whereabouts did you get the conversion kit from thanks
@@adrianrattray9271 kedo parts Australia
Hey, i have a Yamaha dt 125 1984. Can i use the same rectifier to change it from 6 to 12 v? Because the Old ones looks like the one in the video😁
HI Jens, as long as yours looks like the same connection it would seem logical that it would work thee same. Don't forget to change all the other parts I did too. You could reach out to Kedo parts and see if they have a kit.
I'm gonna do the same conversion on 2 of my XT250's, but as I am in South Africa getting the kit is excessively costly. I can get all the parts seperate, but can you give advise on the Rec/Reg, as this is the one area I am concerned about. Will any 12V Solid State regulator work?
Hello good morning, yes you can use anything that keeps the voltage under control, just test it to make sure it’s not passing more than 14.8V Good luck with your project Carl
This question doesn't refer to a Yamaha, but I hope you can help me out Me and my father restore an old NSU motorcycle and the alternator was already converted from 6V to 12V. Now the question: The original light bulbs are 6V 35/35W Will 12V 35/35W shine as "bright" as the 6V or brighter? Because the wattage is the same (only the amps differ) will they have more lumen? I can't find any data.. Maybe we need a bulb with more wattage? But that will not work with the generator, right? And we aren't even close to get finished, so we cannot try it to see the difference (or not) because we never saw the original 6V setup running; That's why I'm asking you 🤔
Hello, it's not a simple answer. A Halogen bulb will emit more light output compared to a incandescent bulb. So which are you using ? The 6V bulb you mention uses approximately half the current your 12V bulb uses. But really you need to know what your 12V generator outputs in terms of max current. Because you may be able to run a 12V/45W or 12V/55W bulb which would be much brighter. Firstly find out what the generator output is and then you need to calculate the load used in the complete electrical system. Sounds like you have a nice project going on, and I wish you lots of success. Best wishes Carl
My yahana ct3 has a rectifier but not a voltage regulator. Not sure what I would do with the yellow wire. Ac voltage from genorator run through ignition switch then to rectifier. Rectifier output directly powers battery curcuit.
Hi, i have not worked on the Yamaha CT3 2-stroke from the early 1970's so its possible the wiring is different. Perhaps you can ask on the Yamaha owners forum I'm sure someone will have the information you need. Carl
yamahaclub.com/forums/topic/19038-74-dt-175-wiring/#google_vignette That should take you to the wiring diagram Carl
I have a 1980 yamaha tt 250. 6v system no battery. Keeps blowing the headlight an rear brake light bulb. High an low 6v 25w headlight bulb. It will last 3 or 4 unless I Rev the bike. What would be a good fix for it ?
Hi Jarrad, I haven't worked on a 1980 250TT, but it sounds like an over voltage issue, but... First step is to check the battery condition and voltage. If it's good it will be around 6.4V and check the electrolyte levels. Then check the battery connections and all the ground connections, a lot of issues can be resolved by just making sure the ground connections are perfect. If the ground connections are poor the system over heats, generates to much voltage and blows bulbs. Second is to check the voltage output with a digital multimeter at 1500rpm, (6.7V) 3000rpm (7V) and 4,500rpm ( max 8V) these are approximate, check your owners manual to be sure of the exact voltage/RPM. There are lots of KZhead videos showing how to do this if your not sure. Hope this helps you. Carl
@@justthewayitis He didn't have a battery so that can't be checked. I assume he's running an AC system directly to the bulbs. I don't know where to find an AC voltage regulator for 6v. I know there are 12v AC regulators for two leads for snow mobiles.
Here are 2 more tips_: You have installed the spring clips (Tension Spring/Clamp) incorrectly, you have to turn them around. And a fuse with 10A should also be (an factory is there a fuse switch), please do not connect directly to the battery. Otherwise a great video.
Thank you 👍
Hello mate sorry to bother you I'm just getting my head around this . So you didn't change the stator and coil still runs at 6v . Could you tell me does the new recitfier / regulator have a 6 v ac in and a 12v dc out ? Could you post a link to the part please
Hi XRP, all three points are correct... its a really simple solution, easy to do, and effective. No change of Stator. I'll try to put link in the video description over the next couple of days. Carl
@@justthewayitis cheers mate I have a 1983 xt250 I'm doing at the moment got it without any electrics just looking to stabilise the voltage and get some lights etc working thanks, Christian
I did search the kedo part numbers from box in video but can't find it
All the parts purchased for this conversation can be purchased here. Www.kedo.de.
Ledgend found it