Military blackout ignition switch

Are these military switches rebuildable? An instruction or procedures or documentation available for repair ?

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roman
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Military blackout ignition switch

#1

Post by roman » Sat May 18, 2019 3:01 am

all the electrics worked for years then the lighting and blackout circuits stopped working. The strong 6V voltage at the switch terminal doesn't seem to be "distributed" to the neighbor terminals. makes me think some wrong in switch.
Tried electrical spray cleaner thinking dirt/corrosion on contacts. Need help to go deeper.
thanks Roman



Buddhahoodvatoloco
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Re: Military blackout ignition switch

#2

Post by Buddhahoodvatoloco » Sat May 18, 2019 3:19 am

1] Pull the dash
2] Test the stanchion/stations for juice,
3] switch on and off,
4] lastly label all connections and pull switch,
5] Turn over and see ho badly worn the poles are,
6] problem solved.

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Re: Military blackout ignition switch

#3

Post by RooDog » Sat May 18, 2019 1:43 pm

I don't get it.
The two switches in the stock photo seem to be the same layout only one of the switches is turned around. WTF?
I have repaired several of these switches with parts pirated form late model aftermarket parts. There are so many AM switch variations that not all of the parts from all of the switches are interchangeable so it pays to have more than a few of them on hand to cannibalize. God ol' Harley parts do not last for ever, but they can be rebooted over and over again for a very long service life......

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Re: Military blackout ignition switch

#4

Post by panhead » Sat May 18, 2019 3:31 pm


drinner-okc
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Re: Military blackout ignition switch

#5

Post by drinner-okc » Sat May 18, 2019 8:41 pm

Roo, in earlier switches the contact plate is 180* from later. It's the shape of the dash. The early style can/will short on the 2-light & later dash covers.

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Re: Military blackout ignition switch

#6

Post by Buddhahoodvatoloco » Sat May 18, 2019 8:49 pm

Semi correct, it's the wriring diagram dictates the which switch.
drinner-okc wrote:
Sat May 18, 2019 8:41 pm
Roo, in earlier switches the contact plate is 180* from later. It's the shape of the dash. The early style can/will short on the 2-light & later dash covers.

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Re: Military blackout ignition switch

#7

Post by roman » Sat May 18, 2019 11:25 pm

My switch is a bit different but concept the same, I didn't have a easy view of the contact bar
Thanks
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Re: Military blackout ignition switch

#8

Post by Frankenstein » Mon May 20, 2019 1:35 pm

A not obvious fault with the switches is that the brass contact stops making a good solid electrical connection with the terminal plate that the wires screw to. The fix is to solder the brass rivet/contact to the screw plate. Clean thoroughly both pieces before attempting soldering. A nice big heavy soldering iron is a plus as well.
Plus, follow all the other good advice WRT repairing switches.
DD

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