|
|
Post by urbantangleweed on Apr 17, 2022 7:03:30 GMT 1
On the MT350 build, as an MT125 it has no light switch, the side lights come on when the ignition is switched to "On" and the headlight comes on when the engine is running. I'd like to do it the same way on the 350 version, but I'd need a feed from the YPVS loom which is live only when the engine is running to switch a relay, is there a suitable circuit to do this?
|
|
|
|
Post by zig on Apr 17, 2022 11:02:41 GMT 1
could it be done from the Tacho / Rev counter circuit the digital as its not mechanical ??
not an expert but just putting it out there David??
ZiG
|
|
|
|
Post by urbantangleweed on Apr 17, 2022 18:52:13 GMT 1
could it be done from the Tacho / Rev counter circuit the digital as its not mechanical ?? not an expert but just putting it out there David?? ZiG Not sure if that would work or not, but it's an interesting concept to explore and not one I'd thought of. This is exactly why I like to ask questions on here rather than the multiple Facebook groups where the response can often be more along the lines of "Why would you want to do that ya dimwit?"  |
|
|
|
Post by zig on Apr 17, 2022 19:09:21 GMT 1
you are quite right David .... i have always found the guy's on here are more than helpfull no matter what you need and nobody will make you feel silly only like minded people here that had to start someplace and ask the similar questions ZiG |
|
|
|
Post by 4l04ever on Apr 17, 2022 21:18:50 GMT 1
If you are using an Ignitec, you could set the shift light to 1000 revs and use the output through a relay to the headlight feed.
|
|
|
|
Post by LC_BOTT on Apr 19, 2022 8:15:52 GMT 1
Could you tap into the regulator output via a relay as above. Should only work after engine started as picks up three phase from alternator when running. Might not work as possibly has battery voltage at terminal?  |
|
|
|
Post by midlifecrisisrd on Apr 19, 2022 10:10:19 GMT 1
You could try a second voltage regulator
Tap it into into the 3 phase white wires then connect the 12v output of that one to the MT headlight circuit
May need a battery eliminator connected to it to so if the headlight bulb pops it keeps a load on the regulator
Generator should deal with it ok as it is still only powering the same things
Steve
|
|
|
|
Post by midlifecrisisrd on Apr 19, 2022 10:19:39 GMT 1
Either that or an opto coupler and a relay control circuit
Opto coupler connects to 1 of the white wires and will give allow you to activate a 12v relay to switch the headlight power
Sure we used to get them at work and were 24 - 240v AC trigger
Trigger voltage in one end, N.O. connection at the other which you can use to switch a relay
Steve
|
|
|
|
Post by LC_BOTT on Apr 19, 2022 14:50:43 GMT 1
Either that or a pressure switch under the seat, only works when you're ready for a ride Or a prox sensor on the wheel, only operates when the wheels are moving, a bit like a cycle computer |
|
|
|
Post by urbantangleweed on Apr 19, 2022 20:08:32 GMT 1
If you are using an Ignitec, you could set the shift light to 1000 revs and use the output through a relay to the headlight feed. More likely to be Zeel if we go non-standard Rob as I know those, would your suggestion still apply? Any ideas if we stay standard Yam? |
|
|
|
Post by urbantangleweed on Apr 19, 2022 20:14:14 GMT 1
Could you tap into the regulator output via a relay as above. Should only work after engine started as picks up three phase from alternator when running. Might not work as possibly has battery voltage at terminal?  That's an interesting one to ponder but like you say, there's probably battery voltage at the terminal already. I can easily check that on my YPVS though. |
|
|
|
Post by 4l04ever on Apr 19, 2022 20:15:30 GMT 1
The Zeel does have a Shift light output, but not sure how low you can set it. I used to always use Zeeltronic units, but since I tried an Ignitec, I now use those all the time.
|
|
|
|
Post by urbantangleweed on Apr 19, 2022 20:15:36 GMT 1
You could try a second voltage regulator Tap it into into the 3 phase white wires then connect the 12v output of that one to the MT headlight circuit May need a battery eliminator connected to it to so if the headlight bulb pops it keeps a load on the regulator Generator should deal with it ok as it is still only powering the same things Steve Thanks Steve but that sounds a bit complicated for me to understand without having a minor stroke! |
|
|
|
Post by urbantangleweed on Apr 19, 2022 20:16:56 GMT 1
Either that or an opto coupler and a relay control circuit Opto coupler connects to 1 of the white wires and will give allow you to activate a 12v relay to switch the headlight power Sure we used to get them at work and were 24 - 240v AC trigger Trigger voltage in one end, N.O. connection at the other which you can use to switch a relay Steve Steve, you just made your first suggestion which I struggled to understand seem simple!  |
|
|
|
Post by urbantangleweed on Apr 19, 2022 20:18:29 GMT 1
Either that or a pressure switch under the seat, only works when you're ready for a ride  Or a prox sensor on the wheel, only operates when the wheels are moving, a bit like a cycle computer Good ideas and proper out of the box thinking, but I don't think it really does what I'm after achieving. |
|
|
|
Post by urbantangleweed on Apr 19, 2022 20:28:14 GMT 1
The Zeel does have a Shift light output, but not sure how low you can set it. I used to always use Zeeltronic units, but since I tried an Ignitec, I now use those all the time. The Zeel shift light can be set in 100RPM increments up to a max. of 20,000RPM, but like you, I don't know how low it can be set, and I might well want to use it as a shift light for the KOSO clocks the MT350 will get, but maybe there's another feed from the Zeel which will be unused that carries 12v after engine start? I've got one on my YPVS so I can fairly easily explore that with a multimeter. |
|
|
|
Post by LC_BOTT on Apr 19, 2022 20:37:15 GMT 1
Bit of a joke really, but all possible I suppose, why the need for lights only when running? Another suggestion would be to trigger them from a sidestand switch if you have a suitable loom. What way are you going... MT frame/wheels etc and YPVS everything else?
|
|
|
|
Post by 4l04ever on Apr 19, 2022 20:50:12 GMT 1
You can have 4 shift light outputs using an Ignitec...
|
|
|
|
Post by midlifecrisisrd on Apr 19, 2022 22:24:22 GMT 1
Was just going to say there are multiple programmable outputs on an Iggy
I'll send flowers to the stroke ward for you 😂
Steve
|
|
|
|
Post by urbantangleweed on Apr 19, 2022 22:27:39 GMT 1
Was just going to say there are multiple programmable outputs on an Iggy I'll send flowers to the stroke ward for you 😂 Steve 🤣😂🤣 👍🏻 |
|
|
|
Post by urbantangleweed on Apr 19, 2022 22:29:47 GMT 1
Bit of a joke really, but all possible I suppose, why the need for lights only when running? Another suggestion would be to trigger them from a sidestand switch if you have a suitable loom. What way are you going... MT frame/wheels etc and YPVS everything else? MT everything except for YPVS 350 engine (and loom etc to run it) |
|
|
|
Post by cb250g5 on Apr 19, 2022 22:45:50 GMT 1
If it were me, I'd put a diode onto 1 of the white 3-phase wires coming from the alternator, to get a 1/2 rectified DC output and feed that to a solid state relay.
I'm not sure what the voltage out of the Yam alternator is, off the top of my head, so I'd test this first before getting a relay to suit. It won't take enough power to affect the rest of the charging system.
|
|
|
|
Post by urbantangleweed on Apr 20, 2022 6:33:12 GMT 1
If it were me, I'd put a diode onto 1 of the white 3-phase wires coming from the alternator, to get a 1/2 rectified DC output and feed that to a solid state relay. I'm not sure what the voltage out of the Yam alternator is, off the top of my head, so I'd test this first before getting a relay to suit. It won't take enough power to affect the rest of the charging system. Many thanks, another option to consider. |
|
|
|
Post by 4l04ever on Apr 20, 2022 9:34:17 GMT 1
The stators output is not relative to ground on the frame, so you would need to connect to two wires and rectify it with at least one diode. The output could be 40 to 60v from memory, so would need a voltage regulator, so you may as well just run a second rectifier/regulator if you are going this direction.
|
|
|
|
Post by muttsnuts on Apr 20, 2022 19:58:29 GMT 1
interesting question.
Tacho feed - can't use this, its not 12v's
Charging circuit - possible, but not straight forward and you'd need to know about diodes and relays, plus half wave versus full wave rectification
Feed/pickup from YPVS servo - can't use them as they are only 5v's and only work when they are due to open
Use an output from an ignitech - yes this is possible, but you'd be as well pushing it through a relay, have the ignitech switch the relay to open the light circuit
Easiest solution - fit a switch as normal !
Got a few other ideas, but all are pretty involved, personally I'd take the easy route and fit a switch - unless you can find out how the MT is doing it, but I suspect its done by the ECU
Have you got a wiring diagram ? that would help
|
|
|
|
Post by urbantangleweed on Apr 20, 2022 21:43:36 GMT 1
Cheers Dave, seems there's no easy solution. It's not desperately important really, it can always just be all lights on with the ignition on I guess, but as the MT headlight only has a feed with the engine running, I thought it would be nice to have the 350 version do the same, but it might be too involved a solution to find when the simplest solution is probably not to find one! Thing is, I want to keep the MT switchgear, don't really want to put old fashioned RD stuff on it, but the MT (like most modern bikes) doesn't have a switch for the lights, it's all done by magic boxes. As an aside, I was amazed at how many sensors are on what is a fairly "basic" 125, the throttle body itself has three! 🤦🏻♂️
|
|
|
|
Post by muttsnuts on Apr 21, 2022 8:20:28 GMT 1
if you get a wiring diagram you should be able to work out which is the feed wire for the lights, then just splice a switched live into it, then the lights will come on as soon as you switch power on, just remember not to sit with the power on and the engine off for too long !
|
|
Dave B
Drag-strip hero
Posts: 240 
|
Post by Dave B on Apr 21, 2022 9:29:36 GMT 1
I think that there is an "lights on only on when the engine is running" output on a Motogadget M Unit. (the headlight feed can be programmed to do that)
It does everything else too.
It would be worth considering.
|
|
