LEDS replacement to idiot lights/HUD - diode trouble?

D

Dodge2000

New Member
I have replaced by standard bulb idoit lights with some 12v LEDS in a plate bolted to where the handlebars used to work.

I have a single LED for both indicators. This is working fine, but I get both indicators flashing at once. I have some diodes coming to sort that out.

Head light main beam is working fine, now that I have sort out the issue with the headlight

Oil pressure light and is not currently working currently, but has been.

Neutral safety works for aslong as I don't run the starter. As soon as the starter kicks in, it kills the LED.

I was getting nothing from either the oil pressure or neutral safety as I had the LEDS wired up so blue/red and Light Green/Red where on the postive side (red wire) of the LED and the (black) negative side of the LED were connected together to share a cable to the black live circuit of the bike. I realised that the black was postive side pretty quick so changed it over. This then gave me my neutral light on when bike was in neutral.

Looking at the wiring diagram and the direction of the silicon diode that is part of the neutral safety circuit it looks like the Light Green/Red could also be the positive side. That doesn't make sense to me, but thought this might be causing the blow out of the LED. I have some spare diodes coming, so was thinking that I might need to get some diodes into this circuit aswell. Should I leave the LEDs wired as they are and put a diode into the LG/R and B/R return feed? Or am I missing something altogether?
 
I think there's two things you should check; first, do you have a current limiting resistor in line with your LEDs? Otherwise, the LED will pull infinity current and fry itself in a matter of moments. Secondly, do you have the LEDs hooked up properly? They have an anode (+) and cathode (-) end - the attached picture should help provide some reference.

Does this help you?

4qnr0.png
 
The LEDs do have a resistor at the base of the +ve terminal. Not sure what the resistor is though as it is all sealed. They are hooked up correctly in the circuit that I am clear the +ve side.

With the ones that are blowing - the neutral safety, I am a little confused. I had the blk lead from the bike going to the +ve terminal, the thinking was that the black is live with the ignition on. My concern is that the circuit diagram seems to show that the silicon diode in this circuit (start circuit) seems to contradict the flow arrows at the start magnetic switch, which looks like the LG/R going to the neutral safetly light could be a postive charge.

My thoughts are that I might need a rectifying diode on the -ve side of the LED on the LG/R wire to prevent and power coming back through the diode the wrong way. Or I need to look at the resistor and get another one in line to cope with the potentially greater load when the starter is engaged.
 
The neutral switch is usually open and grounds when in neutral. So the black wire is hot, a d the green and yellow one should be a ground whenever the bike is in neutral.
Not sure why it would blow when you hit the starter
 
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