Need help with my snowblowerLED upgrade project - Snowblower Forum : Snow Blower Forums
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post #1 of 22 Old 12-19-2017, 04:28 PM Thread Starter
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Need help with my snowblowerLED upgrade project

I'm trying to upgrade my halogen snowblower light to LED.

I put together my wiring as described on this forum: snowblower power source --> switch --> rectifier --> two 2200uf 50v capacitors --> 18w LED light. I connected it to my snowblower, and nothing!

As a test, I connected the wiring to a 12v battery and the light worked. My voltmeter shows 12.5v from the battery and 12.1v after the capacitors. So my wiring seems fine to me; why doesn't it work when connected to the snowblower?
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post #2 of 22 Old 12-19-2017, 08:18 PM
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Bad ground?

Scott
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post #3 of 22 Old 12-19-2017, 09:02 PM Thread Starter
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Bad ground?
For test purposes I grouped my ground wires and attached them with an alligator clip wire to the engine block ground nut.
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post #4 of 22 Old 12-19-2017, 09:21 PM
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"For test purposes I grouped my ground wires and attached them with an alligator clip wire to the engine block ground nut."

-----------------------------------------------

That's most likely your problem. You shouldn't ground anything to the chassis/engine block. Take your source and connect it to the circuit, after that ground nothing directly to the blower. This should fix your problem.

Last edited by alylea; 12-19-2017 at 09:34 PM.
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post #5 of 22 Old 12-20-2017, 11:50 AM
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Keep in mind that some stators do NOT have a reference to frame ground. I realized this on my machine when upgrading my stator. My OEM one was a half moon and one half of the windings was grounded to the frame. My new stator did not have a reference to the frame. It was floating VAC. You may want to check that. My posts give some more detail.


https://www.snowblowerforum.com/forum...4-post993.html
https://www.snowblowerforum.com/forum...8-post995.html
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post #6 of 22 Old 12-20-2017, 07:42 PM
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LEDs are polarity sensitive, most of the time. They use BLACK as hot and WHITE as GROUND. Check that out. And go right to the rectifier don't ground to the engine.
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post #7 of 22 Old 12-21-2017, 05:22 PM Thread Starter
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I took the suggestions from this thread and hooked up the (-) wire from the LED to the DC- coming from the rectifier. I also hooked up the AC- from the rectifier to the blower's ground wire. Nothing. Detached the AC ground wire, still nothing. I've triple-checked my wiring and everything seems correct.

I reattached the halogen light, and it works so I know I'm getting power.

Any more suggestions? The solution is probably staring me right in the face and I just don't see it.
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post #8 of 22 Old 12-22-2017, 10:33 PM
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Quote:
Originally Posted by abjman View Post
I took the suggestions from this thread and hooked up the (-) wire from the LED to the DC- coming from the rectifier. I also hooked up the AC- from the rectifier to the blower's ground wire. Nothing. Detached the AC ground wire, still nothing. I've triple-checked my wiring and everything seems correct.

I reattached the halogen light, and it works so I know I'm getting power.

Any more suggestions? The solution is probably staring me right in the face and I just don't see it.
Start from the beginning... make sure you have 12v AC going into the rectifier. Then make sure there's 12V DC coming out.
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post #9 of 22 Old 12-27-2017, 09:36 AM
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If you have 12VDC or so coming from the BR (Bridge rectifier) then it should work, you may simply have the LED polarity crossed. If you have black/white wires, I've seen it both ways, Black is (-) and white (+) and the even black (+) and white (-). LED's are polarized so I would try switching the leads, the worst case scenario is if its a decently made LED and the polarity is wrong, it simply won't light.
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post #10 of 22 Old 12-27-2017, 02:24 PM
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Don't ground the DC coming out of the Bridge Rectifier. The Bridge Rectifier has Pos. and Neg. terminals. Connect those DC wires directly to the LED wires (with the capacitors wired between the two wires, of course).
No external ground after the Bridge Rectifier - ever.

Borrowed from KissaFrog:

Troy-Bilt Storm Tracker 2890

Last edited by jonnied12; 01-09-2018 at 09:40 AM.
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