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Discussion Topic:
Wiring a signal stat VSM 900 turn signal switch
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Bill E Bob |
07-25-2018 @ 8:26 AM
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Posts: 85
Joined: Apr 2017
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When all else fails, replace the part that all your investigation points to. Managed to find a 6 volt Tung-Sol (made in USA) flasher at our little old local auto parts store. Lights flash at about twice the speed, but, the pilot works as it should. Some wire loom covers and black zip ties and I'll call it finished. Big thanks to all for your assistance! William(new in box=maybe)Brown
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TomO |
07-25-2018 @ 7:48 AM
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Senior
Posts: 7243
Joined: Oct 2009
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5.5 volts should make a 6 volt bulb glow. Try connecting a trouble light to the P terminal of the flasher. If it does not light, either the flasher or socket is bad. I would try cleaning the contacts in the socket and on the flasher. Use 1000 grit sandpaper.
Tom
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Bill E Bob |
07-25-2018 @ 7:13 AM
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Posts: 85
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Switch unit is grounded. As mentioned, when power applied to pilot bulb wire it lights, when properly attached to flasher.....nothing. If pilot bulb wire is attached to "L" (load) terminal, it flashes as it should. Would leave it that way, unfortunately, the pilot bulb stays lit all the time when the switch is in the neutral position. Did a meter check on the pilot terminal of the flasher when operating and only got 5.5V each time it flashed--evidently not enough to light the pilot bulb. Any suggestions?? Is there a specific + ground flasher made? William(suffering love/hate with my Ford)Brown
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TomO |
07-25-2018 @ 7:06 AM
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If you are able to get the light to glow by applying voltage to it, your ground is probably acceptable. Check to see if you have voltage on the P contact of the flasher when the turn signals are operating. If not, then either the flasher is defective or the socket is defective. If you have voltage at the P terminal of the flasher, check for continuity between the P terminal and the bulb socket. You do not have to ruin the paint on your steering column, you can just put a number 10 star washer under the clamp and let the points dig into the paint. Place the washer in a spot that will not be noticeable if you have to remove the switch. Switching the load and power wires will not make the pilot light work. Tom
This message was edited by TomO on 7-25-18 @ 7:29 AM
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trjford8 |
07-25-2018 @ 6:47 AM
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Posts: 4202
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carcrazy has it right. The unit must ground to the column for the indicator light to function.
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trjford8 |
07-25-2018 @ 6:47 AM
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Senior
Posts: 4202
Joined: Oct 2009
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carcrazy has it right. The unit must ground to the column for the indicator light to function.
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carcrazy |
07-24-2018 @ 7:36 PM
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Senior
Posts: 1587
Joined: Oct 2009
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In order to provide a ground between the signal lever and the vehicle you will have to scr*pe the paint off the steering column beneath the mounting strap (hose clamp).
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40cpe |
07-24-2018 @ 6:55 PM
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Posts: 472
Joined: Jan 2010
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A three terminal flasher has a "P" terminal for the pilot, or indicator, light.
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Bill E Bob |
07-24-2018 @ 1:50 PM
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Member
Posts: 85
Joined: Apr 2017
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UPDATE: Turn signal switch installed and signals operating properly, HOWEVER, the pilot bulb in the switch is not operating as it should. Have replaced bulb with proper 6V unit, tested the bulb in the switch by applying voltage and it works fine. Hook up the flasher unit (new) and no pilot light in the switch. Switch is wired per diagram. Any suggestions?? If load and power leads were swapped, at the flasher, might that work? (Without major harm to the system!) William(stumped)Brown
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TomO |
07-22-2018 @ 8:17 AM
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Senior
Posts: 7243
Joined: Oct 2009
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The blue wire is used to provide power to the indicator bulb on the switch. The ground is supplied by the clamp that holds the switch to the steering column.
Tom
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