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Thread: Question about 1946 WL brake light switch & hardware configuration

  1. #1

    Default Question about 1946 WL brake light switch & hardware configuration

    I was hoping that someone could help me with the configuration of the brake light switch and related hardware on a 1946 WL45.
    I have had a chrome switch on my bike for 20 plus years, and finally purchased a complete parkerized kit. I would like to make sure I install everything correctly, but I can't find a good reference in the parts catalog, in the "How to restore your Harley-Davidson" book or anywhere else online.

    Sorry for so many questions, but I want to try to get this right

    Please see the pictures below. Here are my questions:

    1. I am assuming that the clamp that mounts to the brake rod goes on as shown? (tab down and rear-facing) is that correct? It is pointing up and front in the parts manual.
    2. Where does the insulating disk with three holes go? I don't think it makes sense to go on first before the wire terminals and screws, but sliding it on after the screws are tight doesn't seem to make sense either.
    3. Does the wire spring clip go on as shown, with the open end facing up? It shows facing down in the parts manual.
    4. I am assuming the clamp bolt with the notch goes in so the wing nut is to the outside of the bike? Is that correct?




    Thanks in advance!
    Last edited by jupiter2; 10-19-2017 at 07:40 PM.
    Jim
    AMCA #466

  2. #2
    Join Date
    Jun 2010
    Posts
    180

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    The parts book diagram is correct (for big twin), the wire hook receiver sits on top of the brake rod (for big twin), not sure if wl is the same, Robbie will know.
    The insulator disc is first then wire and screw, notice screw in diagram.
    Last edited by 1950Panhead; 10-19-2017 at 01:05 PM. Reason: Big twin notes

  3. #3

    Default

    Thank you - that answers question #2.

    I think the receiver has to hang down, since the brake switch itself is under the brake rod on a 45.

    It's interesting how there are still some details like this that are under-documented.
    Jim
    AMCA #466

  4. #4
    Join Date
    Mar 2011
    Location
    PA
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    pretty sure 45 does not use the rod brake lock and stud... for the brake light switch... it has a longer wire that goes right to the brake pedal

  5. #5
    Join Date
    Mar 2011
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    PA
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    45 Brake light switch.jpg

    part number for 45 wire is 72020-39 you'll see two listed one for big twin and one for 45

  6. #6

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    The parts catalog I pictured is for the 45 and the 45 Restoration company has the same kit with the brake rod clamp. So that is definitely confusing.
    Last edited by jupiter2; 10-19-2017 at 07:37 PM.
    Jim
    AMCA #466

  7. #7
    Join Date
    Mar 2011
    Location
    PA
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    The Brake lock clamp is used on the long rod... and it's used as just that... a lock to lock the brake on so that you can remove the back wheel from the drum... serves no other purpose on a 45... you press the brake loosen the clamp and slide it back against the lower battery box mount bolt
    45 Brake lock.jpg here it is on my 39 WLD (first year of it)

  8. #8

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    I just ordered the 72020-39 parkerized wire on eBay. It is definitely strange that all 45 references seem to show that clamp.
    Jim
    AMCA #466

  9. #9
    Join Date
    Mar 2011
    Location
    PA
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    I just checked Palmer's book and it's in there on page 227 and 228... check it out...

  10. #10

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    I must have an older edition - mine has oil pumps on those pages. Any chance you could post a pic of those pages?
    Jim
    AMCA #466

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