johndeereman

Well-known Member
Tried putting LED lights on my 3010 positive ground system lights work for about three minutes then quit working (blow) obviously because the system is positive ground I have to hook the lights up the same way. What do I need to do so they don't blow?
 
The lights and instruments are 12 volt negative if
they are like the 4020 . The only 24 volt part on the
tractor Is the start circuit
 
Gas or diesel?

VS seems convinced it's 24 Volt diesel, but I don't see that bit of detail in your post???

LED tractor lights I've seen have two wires coming out, a (+) and a (-).

NO way will an LED light illuminate if connected backwards.

INTERESTING that you have them connected so they light, but "die" quickly.
 
(quoted from post at 19:55:46 10/12/18) Gas or diesel?

VS seems convinced it's 24 Volt diesel, but I don't see that bit of detail in your post???

LED tractor lights I've seen have two wires coming out, a (+) and a (-).

NO way will an LED light illuminate if connected backwards.

INTERESTING that you have them connected so they light, but "die" quickly.


It's a gas. 12volt positive ground
 
I just tried replacing the 1156 bulbs on my'48 Styled D headlights with an 1156 LED replacement, It will not
work on the positive ground system,guess it wasn't meant to be.
 
As I best recall SOME of the lights are fed off the + Grounded battery, the OTHERS fed off the - Grounded battery, via the A & B + and - Ground feeds up to the light switch (where the batteries tie in the center it has a jumper wire to frame ground) in order to balance loads IFFFFFFFFFFF on a 4020 24 volt Diesel system that is.

John T
 
Since its a Gas ignore my post below. That being said an LED is a diode and requires the correct - ground NOT POS

John T
 
(quoted from post at 18:08:54 10/13/18) You are correct, lights are fed off both the + and - side so it balances.


From what I've found in my research is an LED is basically a diode. With using the positive as a ground your basically feeding the light backwards which with a diode can only take a small amount of electricity backwards which is likely why they blow. Today I converted the tractor to negative ground and the lights work fine.
 
Forgive my boldness but Ive worked electronics since the 80's. generally when LED burn, its due to excessive current as the forward bias voltage is met resistances goes down and current flows. Most automotive LED bulbs now a days have built in SMD drivers and heat sinks but are still susceptible to current and large voltage variations. Old filament bulbs are very forgiving and non polarity. LED's are polarity sensitive, but modern built in drivers can make them both AC/DC non polarity with wide voltage range in one package.

Provided that your connections are correct and system voltage is known you may just need a current limiting or load resistor. (all resisters limit current)

Or try

(G18-S25 1156 2.6 Watt 7-24V AC-DC Non Polarity) use this to search
 
I have a JD 1010RS Positive Ground with generator and have sealed beam LED lights on the front and a LED bulb in the rear worklight without any issues now and its been a year.
 

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