Installing Line Lock
These notes apply specifically to a 99 Cobra with ABS. A Mustang GT and other new cars, at least through the 2001 model year, are very similar. I have added some notes from people who used the initial version of this page for their install.
You will need the following items and tools....
These can be obtained from either Jeg's or Summit. In addition, you will need the following to duplicate my installation; your needs may vary:
Some people have commented that the Hurst installation kit has too much stuff left over and that the money would be better spent just buying the needed fittings and the two 12" brake lines and the adapter fittings and save some money. If you want, instead of buying the installation kit and one additional 12" line, buy the following loose pieces AND the adapter fitting kit....
I wanted to install the line-lock switch and light where they could be removed and stuffed into the console; I also wanted to avoid drilling more holes than necessary. It was also important to mount the solenoid as close to the ABS module as possible.
The hot wire can be tied into the same connection as the power to the Abbott unit, using a hot wire in the console just to the left of the shifter.
I used a two-sided Velcro strip, one side on the side of the switch, the other just to the left of the CD player, and installed the switch there.
In this location, the switch can be operated with your index finger with the shift lever in first gear position.
The indicator light can be placed on the top of the dash using another small piece of two-sided Velcro.
The light can be seen staging in either lane.
The wires are run easily into the console through the top of the shifter boot.
The hot wire can be run through the air conditioner drain hole in the firewall and routed up on the left side of the engine compartment to the ABS module.
The metric fitting kit is needed to fit the MC1 line going to the ABS unit and to fit the ABS unit MC1 port. The Hurst solenoid uses 3/16" tubing and fittings and the ABS module has 10 mm fittings in it. You have to convert to 10 mm to 3/16" fittings using the union and fittings in the Mustang specific kit. The kit is marked for 96-99 Mustang with ABS and worked perfectly. I used two 12" lines to run from the MC1 tubing union and back to the MC1 port on the ABS module.
This is what the ABS looks like from the top before the Line-Lock was installed:
Here is the bracket removed from the car and drilled for the solenoid mount:
Here is the finished solenoid installation:
You have to bleed the brakes after installing the line-lock.
How it works:
The line-lock is nothing but a solenoid valve in the front brake lines which is
energized (closes) on pressing the switch near the shifter.
It is used at the line and in the water box. At the line, you can stage,
apply the brake,
push the button, let off the brake, and the front brakes are held on until the button is
released. This allows you to let out the clutch some without accidentally rolling the car
forward. Release the button at the same time you release the clutch to launch
In the water box, you can hold the car in the box using the front brakes
positioning the car, pushing the brake pedal, pushing the switch, release the foot
brake, spin the tires to your heart's content; as you release the button, the car will move out of the
box and lurches as it hits drier pavement.
During normal driving, the solenoid is open and the brake pressure is applied
to the ABS
unit exactly as it is without the solenoid installed. Only when the solenoid is powered
via the dash button is the brake line valved off and pressure held on the front brakes.