Author Topic: Low, low beam  (Read 594 times)

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mswyka

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Low, low beam
« on: March 21, 2018, 06:52:33 PM »
I had an unusual (for me) experience this evening.  While starting the green sled, the headlamp and instrument lights came on as normal but then they all simultaneously dimmed to about half of what they should have been.  I have not seen that before, has anyone seen anything similar to this?  Sled seemed to be running fine otherwise.  We are out of snow, so I didn't drive it anywhere, but I expect that the light output of the headlamp would have been insufficient to see by.

I will add that the intensity of the light did not increase with increased throttle.  I will have to find some time to check voltage.
« Last Edit: March 22, 2018, 07:03:04 AM by mswyka »
Intruders:  1978, 1979, 1980, 1981 Custom
Invaders:  1979 340, 1980 440, 1980 440 TOC Custom
Projects:  1979 Invader 340, 1980 Invader 340, 1979 Intruder 440, 1982 Intruder 440, 1980 Drifter 340 F/C, 1972 Panther 303 ...

gixxer6

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Re: Low, low beam
« Reply #1 on: March 22, 2018, 01:09:53 PM »
e-start on this one? 

mswyka

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Re: Low, low beam
« Reply #2 on: March 22, 2018, 05:01:02 PM »
This sled has manual start.
Intruders:  1978, 1979, 1980, 1981 Custom
Invaders:  1979 340, 1980 440, 1980 440 TOC Custom
Projects:  1979 Invader 340, 1980 Invader 340, 1979 Intruder 440, 1982 Intruder 440, 1980 Drifter 340 F/C, 1972 Panther 303 ...

gixxer6

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Re: Low, low beam
« Reply #3 on: March 22, 2018, 06:20:10 PM »
Bad voltage regulator? 

mswyka

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Re: Low, low beam
« Reply #4 on: March 23, 2018, 05:00:20 PM »
I guess I have to find some time to check voltage output and swap in another regulator. I had always thought when they went bad that voltage would go high.
Intruders:  1978, 1979, 1980, 1981 Custom
Invaders:  1979 340, 1980 440, 1980 440 TOC Custom
Projects:  1979 Invader 340, 1980 Invader 340, 1979 Intruder 440, 1982 Intruder 440, 1980 Drifter 340 F/C, 1972 Panther 303 ...

rminier

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Re: Low, low beam
« Reply #5 on: March 23, 2018, 05:40:24 PM »
 1.   Bad keyswitch....B terminal (12 V AC source from lighting coil) to L terminal (to lights)not making good contact.
 2.   A "hot" wire is touching the chassis. Most likely the wires running under the seat to the rear light. There is a connector above the fuel pump that disconnects the taillight to see if your headlight then works properly, without having to remove seat.
 3.   Voltage Regulators can fail internally where the hot side touches the ground side and dims the lights. I haven't experienced this, but there were some Polaris sleds in the late '90's---early 2000's that had a bad batch of regulators that were notorious for causing dim lights. As you said, most of the time when they fail, you blow up expensive headlight bulbs.  :)
« Last Edit: March 23, 2018, 05:48:11 PM by rminier »
75 SnoJet Astro SS, 79 Kawasaki Invader 440 (two of them), 81 Scorpion Sidewinder, 82 Blizzard 9500, 83 Yamaha Vmax 540, 97 MXZ 670....and holding...for now.

mswyka

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Re: Low, low beam
« Reply #6 on: March 23, 2018, 05:46:59 PM »
Thank you. I will check these.
Intruders:  1978, 1979, 1980, 1981 Custom
Invaders:  1979 340, 1980 440, 1980 440 TOC Custom
Projects:  1979 Invader 340, 1980 Invader 340, 1979 Intruder 440, 1982 Intruder 440, 1980 Drifter 340 F/C, 1972 Panther 303 ...

mswyka

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Re: Low, low beam
« Reply #7 on: March 31, 2018, 09:45:47 AM »
Happy Easter!

So we went out to check out the light condition, fired up the sled and the lights are were surprised to find the lights working properly.  So with that, she is going away to the machine shed for a long summer's rest.
Intruders:  1978, 1979, 1980, 1981 Custom
Invaders:  1979 340, 1980 440, 1980 440 TOC Custom
Projects:  1979 Invader 340, 1980 Invader 340, 1979 Intruder 440, 1982 Intruder 440, 1980 Drifter 340 F/C, 1972 Panther 303 ...