"Dead spot" in Brake lights

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Supermike
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"Dead spot" in Brake lights

Post by Supermike »

Okay... got another quirky issue... I've noticed when I depress the brakes on my '67, the tail lights glow immediatly. They will stay lit until I have to apply some solid pressure and really depress the pedal, then they go out! HOWEVER, if I then put HARD pressure ("stand") on the brake, the lights come back on!

What gives? The brakes themselves feel fine... it appears to be just a "dead spot" affecting the lights.

:hmm: :dk: :help:
Former owner of a '67 F100 Camper Special
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Post by fordman »

sounds like a dirty switch
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Post by Supermike »

Where is the switch located? Is it easy to clean?
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Post by fordman »

its on the brake pedal rod that goes to the master cylinder. i dont know if they can be cleaned. i havent looked at mine at all.
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Post by fordman »

probably just watch which way they come off. i think they can go on differently maybe not.
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re: "Dead spot" in Brake lights

Post by 4th effie n counting »

on my 67 not a cs the switch is easily removed. I forgot how mine went back on, but getting bolt back thru while holding the switch is a bit of a pain in the knuckles. I think when i get motivated to try to re-attach mine i will drop the column a few inches, it is really tight to reach thru there.
if you don't mind, would you let me know how your switch is oriented?
I believe someone posted the wires are toward driver side, but i need to know if the plastic part is closer to firewall or dash.
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Post by fordman »

i think the wires go toward the passenger side. but i am not 100% sure on that.
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Post by Supermike »

If I decide to replace it, I'll take a picture first. For the most part, the lights stay on when I'm braking. There's just a very short little window where they go off before they come back on. And by then I'm already going slow. Probably not the safest, but they DO work. I just don't feel like paying shipping for something so dinky.

BTW, I found that what I thought was what I needed at Autozone is not what I thought it was. It's some other switch. The switch I DO need is sold by NPD, though.

If anyone else has had this problem and/or has pictures for a '67, though, I would appreciate them! THANKS!
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oldschoolrods
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re: "Dead spot" in Brake lights

Post by oldschoolrods »

I got a new switch for mine at napa, it changes out in about 5 mins, unplug the wires, then i think theres a jam nut. you do have to get it adjusted right so that the brake lights will go out when you let off the pedal.
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Post by Supermike »

Thanks... good info... I'll keep that in mind. I'll probably do this, but I may wait 'til it's not 20° outside.
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re: "Dead spot" in Brake lights

Post by 4th effie n counting »

supermike, your switch will be different than oldschool's... his is a plunger type and they are much easier. yours will (should) have a bolt that goes thru switch and pushrod-then thru pedal arm- cap nut.
still shouldn't be too hard considering you have the right pushrod on yours. only issue is like i mentioned, the tight fit getting hand up in there to pass bolt thru it all.
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Post by Supermike »

thanks! Good to know! :thup:
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