How to Install a Brake Safety Feature on Your Car

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Install a brake-safety feature during high-performance brake installation on a classic muscle car; learn how from our expert mechanic in this free auto-restoration video.

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Video Transcript

A brake safety feature is the combination valve has a pressure sensor on it. So that if you, for instance, blow a rear brake line and you have a lot more pressure going to the front than the back because the back is just pulling out on the ground, this wire plugs on to the combination valve. Now, Mark installed the combination valve for the new braking system here at the top. The original braking system had the combination valve way down here. So this wire, where I'm holding here in this fitting, is for extending the emergency circuit, the warning circuit to the new combination valve. So Mark has just cut the wire or is taking the wire off of the old one, and then he's going to cut it and strip the wire back and put this new sensor fitting on the end. The connector Mark is using is a solder connector. It just holds the wire in place, gets everything lined up so he can solder it. Every connection we do at this shop is soldered. We do enough work. I don't ever want problems because of something silly like a wire coming apart. It takes a few minutes extra for every connection but it assures us--we're just trying to limit the potential problems we have. Old cars present you enough problems without simple things like wiring coming apart. So there's a number of different kinds of soldering irons. We found that this little butane cartridge-style work the fastest. And so you heat up the piece--that compression piece in the middle and you get it hot enough so all you do is touch the solder to the piece and the solder melts. And then he's got a little shrink fit--a bit of rubber there. And after the joints are soldered, he heats it up there and it shrinks there and makes it a water-resistant connection. And plugs it in. And now we have a safe brake install.


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