Re: Brake Line Junction for stoplight switch-1955 Packard

Posted by PackardV8 On 2011/8/8 22:24:07

From post #4 above:
"The brake line is 3/16" with 3/8-24 threaded nuts"

Obtain a junction block with FOUR flare connexions. Drill one with a "R" drill bit and tap it 1/8 pipe.

3/8-24 tap drill is "Q" = .3320" "R" is .3390. So it should work.

NOTE that a 1/8 pipe thread is very close to 3/8 24 thread. I've forced bolts and pipe plugs several times on a variety of applications. So tapping appropriately should work just fine. Worse case is that it will leak and then have to scrap the idea.

Double check the stop lite switch to see if it is TAPEReD or streight pipe tap. If it is tapered then drilling and tapping should work.