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Old 07-28-2015, 06:52 PM
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wiring led pilot lights? there 22mm panel lights

I had to put a liquid cooled Kawasaki engine in my grandfathers lawn tractor after the B&S in it went bang. He liked it enough that it's worth me putting the time in... I already got it bolted in and running BUT, the idiot lights from the original tractor that the engine came from ( JD LX188, it was my parts tractor ) had no place on the dash, so I bought 3 22mm LED pilot lights off Ebay. they have screw terminals and are marked with a wiring diagram I think, but it just says X1 and X2, they cross to the middle with a 20MA marking.. does it matter which side goes where? I've always gone by the rule that if you power an LED backwards, it burns up

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Old 07-29-2015, 03:38 AM
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I many LEDS in my day job...... I guess if you leave it wired back wards and the voltage limit of the LED is exceeded, then it would burn up. If you wire it correctly and the voltage limit of the LED is exceeded it will also burn up.
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Old 07-29-2015, 07:12 AM
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the original dash lights are 194 bulbs. are these going to work, or should I put a mini voltage regulator on each? the kind that Radio-shack sells.. The Kawasaki engine has a full DC rectified charging system that runs 13.5-14.4V pretty much like any automotive system
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Old 07-29-2015, 08:35 AM
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LEDs run at 1.5v so you'll need a resistor in one of the lines if yours aren't already equipped with them...

Russ
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Old 07-29-2015, 10:44 AM
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mini-wedge

X1,X2 usually indicates a line voltage AC source but they should work on DC assuming the voltage is correct.
The 194 bulbs should work fine and are designed for the purpose. (mini-wedge, 14 volt indicator bulb).

vicrod
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Old 07-29-2015, 01:20 PM
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right, I took the engine and entire wiring harness out of a parts JD LX188 tractor. I adjusted the wiring to fit the 'new' lawn tractors switches except the key switch since the JD uses a switch with a circuit board on it..

The LX188 dash used 3 194 bulb sockets for the indicator lights on it, but the panel is part of the dash so I can't swap that over. hence the 3 Pilot lights, and there marked 12v.. so being A/C they could work either way? Just they were a little under $20 for the 3 so I don't want to burn them out. If my grandfather could see I would just install gauges ( oil press and coolant temp ) but he's pretty blind and bright lights would be better.
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Old 07-29-2015, 02:07 PM
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try it

The 22mm pilot light is a standard industrial product. The LED version should work on 12 volts DC if it is rated for that voltage.
Google the cat# for verification.
The only thing that can go wrong is it won't light because it's marked wrong and it's rated for a higher voltage.

vicrod
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Old 07-29-2015, 03:24 PM
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The cat number comes up as a micro switch so I feel like its a faked number. The brand is audicious which comes up as Taiwanese.. But its marked 12v so I'm just gonna test it with 12v power and ground and see what it does
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Old 07-29-2015, 06:01 PM
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In the future, don't buy your LEDs off EBAY. Buy them from a reputable dealer like Mouser or Digi-key. You will get a good product and a downloadable data sheet with all the information you need and you won't be having the problems you currently have.
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Old 07-30-2015, 11:30 AM
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well I am happy to announce that these lights work either way. The light output is... barely visible. These things barely glow. probably visible in a darker room where a pilot light would normally be used but totally unacceptable for my uses. one tiny LED is all that is in them

SO, I'm going to gut the things, drill a hole thru the base for wires and counter sink from the top ( lens unscrews ) and install the 194 bulb sockets. I will just epoxy them in place. screw the diffuser and lens back on and. they will be BRIGHT.
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Old 07-30-2015, 03:17 PM
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Good deal, I often use superbrightleds.com
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