Installing a speedometer from Mikes XS

I think the problem is that a regular bulb isn't polarity sensitive and a LED is. You may have to put a diode in each positive lead from the signals and and connect to yellow and ground yellow/black.

Yep, I think you're right, that's the solution.
 
...Any thoughts on my 2nd or 3rd issues/questions?

Somebody else will have to chime in on that, far too modern technology for me. But, I understand the '69 VW idiot light. Current through that provided the initial power to the 'exciter', to bootstrap the alternator, same as the old Delcos. None of the XS's used that method...
 
The brown wires on xs' is switched 12V power so I assume the black/red would be ground but not sure if that would work with a LED light or not. The headlight failure shouldn't have anything to do with the charging.
 
The brown wires on xs' is switched 12V power so I assume the black/red would be ground but not sure if that would work with a LED light or not. The headlight failure shouldn't have anything to do with the charging.

Ok, thanks. That's good to know...much appreciated.
 
Ok, turn signal with diodes works great...brake light indicator is now oil light on speedo...check. not using the headlamp failure indicator...

But now I got a wierd issue. The highbeam indicator is on regardless of the switch? I think from the stok harness, the signal comes from the switch (seems to be working fine) to the reserve lighting unit...then to the indicator light...any thoughts?
 
I'm glad you got it fixed Brassneck. Thanks for posting here..I was just living with the 1 sided blinker indicator working..now I know what to do for mine.diodes. thanks.:thumbsup:
 
Yep, it was super easy to do...and got everything hooked up, and all works perfect....I used 1N4005 diodes (radioshack, 1.99 for two) and soldered them with the gray band going to the LED....then each diode connected to the left/right signal wire. I grounded the LED and bingo, done.
 
Hi All,

It's been about 8 months now and the mini-speedo has worked fairly well. I've now got an issue that's a little puzzling...and similar to an earlier post (high-beam issue).

a) When bike starts up, all lights work...but there seems to be a slight/low power source going to the LED high-beam light on the speedo, causing it to light up when the low-beam headlight is on... and then it's slightly brighter when the hi-beam is switched on. (Because it's an LED it's pretty bright and annoying).

I haven't had this issue for the past 8 months, and haven't messed with the wiring since my initial install, but now it's there all of a sudden. I'm curious to know if anyone knows if there's always a faint signal to the speedo even when on low? I would think not...since it didn't show up as an issue before...

I've checked grounds...and they are good. I am thinking either corrosion at the switch, or the reserve lighting unit has something to do with it, since these are the only two areas where the signal goes and connected to the hi-beam light...but I actually don't know what that unit is/does...and don't think there's anyway to take it apart.

Anyways, thanks in advance.
 
Are you sure your low beam didn't burn out? The reserve lighting device takes over if the low beam burns out by lighting the high beam at a lower brightness.
 
Are you sure your low beam didn't burn out? The reserve lighting device takes over if the low beam burns out by lighting the high beam at a lower brightness.

That's a good question...and i just checked....so the low beam does light, But it's very low, compared to what it usually is. I happen to have another headlight and I'll swap it out and check laterm tonight. Thanks!
 
If the hi-beam and ground connections are reversed, hi-beam will still work fine.
But, lo-beam current would have to pass thru both filaments to get to ground, and appear dim.
And, the high-beam indicator would receive some of that voltage...
 
If the hi-beam and ground connections are reversed, hi-beam will still work fine.
But, lo-beam current would have to pass thru both filaments to get to ground, and appear dim.
And, the high-beam indicator would receive some of that voltage...

That's interesting...but I'm not sure if that's my issue since it's been working fine for 8 months and haven't done anything to the wires. I suppose the headlight connector could be reversed, but somehow I don't think so. I'll check it as well.
 
And the winner is....

burned out headlight!

Thanks Grinder. Much appreciated. I guess the reserve light unit is working...kind of cool that it did it's job, notifying me that the light had an issue. :)
 
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