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Old 07-15-2011, 05:33 PM   #1
mkrog1
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Default Help!! brake line adapter needed

I need a brake line adapter to install my brake light switch.The switch is the old style that is installed in the master cylinder and I need a adapter to go from pipe thread to flair fitting,female 1/8in npt to male 3/8 flair.I have looked every place I can think of but no luck.
I would like to put the switch in the proportional valve but if any body has any other ideas I'm open to any thing that will work and look clean
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Old 07-15-2011, 05:38 PM   #2
RICH B
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Default Re: Help!! brake line adapter needed

Speedway has a switch that is male 3/8" flare,
Item #:91031303. I'm sure other vendors sell it also.
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Old 07-15-2011, 05:41 PM   #3
F&J
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Default Re: Help!! brake line adapter needed

What the heck kind of brake light switch needs that? Or are you remote mounting the switch with tubing?

I have some NOS fittings from my Dads shop in the 1950s, But I think they would be male 1/8 to male flare
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Old 07-15-2011, 05:43 PM   #4
53sled
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Default Re: Help!! brake line adapter needed

pipe plug and a $10 lever switch, you'd be driving already. the port in the proportioning valve isn't for a brake light switch, is it? I thought that was for the warning light?
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Last edited by 53sled; 07-15-2011 at 05:48 PM.
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Old 07-15-2011, 05:58 PM   #5
Royalshifter
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Default Re: Help!! brake line adapter needed

Napa?
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Old 07-15-2011, 06:35 PM   #6
Fenders
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Default Re: Help!! brake line adapter needed

Or if you don't want the lever type use the button type...
http://www.google.com/products/catal...ed=0CEcQ8gIwBA#
Just weld a bracket so the brake pedal holds it normally open (pushed in).
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Old 07-15-2011, 08:25 PM   #7
tommyd
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Default Re: Help!! brake line adapter needed

Won't work in the proportioning valve. I have my switch in a brass block that I think I got at NAPA. It has 3/16 fitting thread on each end and 1/8 pipe thread on top for the switch. If nothing else get a block that has three or four 1/8 pipe thread in it and add the flare fittings you need.
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Old 07-15-2011, 08:34 PM   #8
Engine man
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Default Re: Help!! brake line adapter needed

Try a trailer dealer. They used to have fittings to connect brake controls to the master cylinder.
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Old 07-15-2011, 08:39 PM   #9
62rebel
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Default Re: Help!! brake line adapter needed

truthfully, i'd never plumb in a switch into the brake lines unless it was the only way to go. it creates another potential fluid leak and line failure point. go with a mechanical switch.
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Old 07-15-2011, 08:47 PM   #10
old me
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Default Re: Help!! brake line adapter needed

Like Rich said, Speedway has one with the flare.
Did a dual reservoir master cylinder change over on my 63 'bird where the original switch is mounted to the master cylinder, and used the Speedway brake light switch. Used a "T" off the new master cylinder and hooked brake line to one side, switch on other side.
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