51 headlight switch wiring

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craig60pan
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1951 FL
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51 headlight switch wiring

#1

Post by craig60pan » Mon Sep 21, 2009 1:48 am

Just finished rewiring the headlight switch for a 51 FL.
Replaced the wires the same as they came out
Red with black in the center, black with red and red with yellow on the outsides.
Checked the wiring diagram and the connections on the terminal plate make sense,
power comes in from terminal 9 to red with black
black with red and red with yellow go to the headlight via terminal 21 and 22.
They match the wires colors coming from the headlight.
The only confusing thing is if you look at the wiring diagram, it seems to show the red with black and black with red reversed in the switch.
Since power has to go to the center on the switch I assume this is an error.
I checked a reproduction switch and it has the wires the same way that I do.
Am I missing something here?
CJ
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Perry Ruiter
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Re: 51 headlight switch wiring

#2

Post by Perry Ruiter » Mon Sep 21, 2009 4:44 am

craig60pan wrote: The only confusing thing is if you look at the wiring diagram, it seems to show the red with black and black with red reversed in the switch.
I don't think that diagram is to be taken literally. I think it's just trying to show the colours of the three wires in the bundle not their position at the switch. Clearly, as you concluded, red with black must be in the centre position since it's the power in ... Perry

craig60pan
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Re: 51 headlight switch wiring

#3

Post by craig60pan » Mon Sep 21, 2009 12:08 pm

Thanks Perry
Just needed some validation

King
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Re: 51 headlight switch wiring

#4

Post by King » Mon Sep 21, 2009 1:42 pm

Hi All
Sort of on topic. Does anyone know of a good aftermarket headlight switch? The one I have is junk. Or better yet has anyone successfully refurbished an original switch? Also regarding head (and tail) lights, grounding can be iffy. I have run 12 ga wiring from the ground side of both my head and taillights to lugs on the frame and noticed much brighter outputs.

King

craig60pan
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1951 FL
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Re: 51 headlight switch wiring

#5

Post by craig60pan » Mon Sep 21, 2009 2:40 pm

King
I have a pretty decent repo one that I used on the 60 pan but can't find the bag it came in.
Old Dude or NOS parts would be my first try. There is a chance it came from V-Twin (part number 32-0555// OEM 74840-29)
Been too long ago to be sure
CJ

King
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Re: 51 headlight switch wiring

#6

Post by King » Mon Sep 21, 2009 3:28 pm

Thanks Craig

It's good to know the part # so i know what I'm talking about. I'm headed up to Jefferson in a couple of weeks and will check in with Old Dude there. I think the one I have came from V-Twin but not sure as I never saw the bag it came out of. It is very dificult to switch and then you need to jiggle it to get a contact.

Bosheff
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Re: 51 headlight switch wiring

#7

Post by Bosheff » Mon Sep 21, 2009 10:52 pm

Sure you can honey up a well worn switch. Usually the cross bar and the contact points on the fiber board are either well worn or dirty to the point where they don't conduct electricity very well. If the fiber board is broken you'll probably have to find another board. Polishing and reshaping the contact points and cross bar sometimes help. Sometimes you may have to tighten the lugs to the fiber board, but be careful not to crack the fiber. I have never tried to mix repop parts with genuine parts, but maybe some of the pieces will interchange without a lot of modifying. You should be able to interchange parts from a -68 switch. As I remember the only difference is the keyhole cover. You may even be able to swipe parts off a 6 lug switch including the fiber. You just won't use the extra lug. A well worn switch is a thing of beauty as it has a very smooth action, and won't grind on the speedo cover like the junk repops do....bosheff

craig60pan
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1951 FL
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Re: 51 headlight switch wiring

#8

Post by craig60pan » Mon Sep 21, 2009 11:22 pm

Are we talking about the same thing?
I am talking about the 2 way headlight switch (hi-lo) ?
CJ

Bosheff
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Re: 51 headlight switch wiring

#9

Post by Bosheff » Wed Sep 23, 2009 12:28 am

Sorry bout. that. I thought you was talkin bou the ignition switch. That's what I git for tryin to do three things at once....bosheff

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