Firstgens.com

With 2 asking, and me feeling a tiny bit motivated, I thought I'd put something up on installing a line lock.

First things first though. What is it? A line lock is an electric valve. It inserts in the brake line for the front brakes such that it blocks the line when you push the button.
How do I use it? Well, you stomp on the brakes. Then push and hold the button and let go of the brakes. As long as you hold the button, the closed valves keeps the pressure in the front brakes.

Then just do your burnout. Car will sit still while the back wheels spin and smoke. Big fun, Of course, drag racers use this technique to heat the slicks in the water box at the strip. But it's fun just about anywhere.

Lots of different kits and individual parts are made and sold. I bought a summit brand valve, some generic parts store brakelines, and the button shown in this hurst kit (it has a rubber collar that slips tightly over my gearshift)

Here's my master and brakelines before installing the line lock.

Lots of people just screw the valve to the inner fender, and most of the kits have brakelines long enough to do that. Of course, I had to make mine vanish.
I modified the existing bracket that holds the distribution valve on so the valve would also attach to it.

The front (left) bolt goes into the stock distribution valve. Here's a pic of it installed.

Then it was just a matter of making and attaching some new brake lines and bleeding the brakes.

Here's some other examples of mounting the line lock valve.

And finally the wiring.
The black wire just got a ring terminal and attached to one of the mounting bolts for a ground.
The red wire gets extended and routed into the cabin and attached to one of the switch wires.

The switch gets mounted somewhere handy. The one I used, in the hurst kit picture above, just slides over the stick, after taking the ball off. Oddly, I have no picture of this, gonna have to take one. Hurst also makes a bunch of balls and T handles with the button built in, but not a white 5 speed ball for me :(
Any 2 wire momentary switch will work.

The other wire off the switch goes to power, preferably fused. I took the easy way out and just spliced into the pink wire for the backup lights. It was handy, and fused...