Mustang Hurst Line Lock (1975-2014) Installation Instructions
This Line Lock from Hurst will fit 1975-2014 Mustangs.
At the drag strip, a line lock is almost a must, as you need a way to lock the front brakes and spin the rear wheels to put some heat into them. With this Hurst Line Lock, you can get a great and easy to install line lock, which will significantly help your performance at the track. Order today - and don't forget the handy installation kit, which contains everything you need for installation.
Tools Required:
- Tube Bender
- Double Flaring Tool
- Drill
- Tubing Cutter
- 3/8-inch, 11mm, 12mm Line Wrenches
- 12mm Wrench
- Ratchet
- 10mm Socket
- 14 Gauge Wire
Install Difficulty:
- Moderate Project
1. To begin the installation of your new Mustang Hurst 1745000 Line Lock, remove the negative battery cable from the battery.
2. Find a location to place the Hurst Line Lock Solenoid from the Hurst Line Lock Kit. An easy location is by the master cylinder and distribution block.
3. Use a drill and the 7/32-inch drill bit to drill three holes in the metal.
4. Fasten the solenoid to the Mustang engine bay using the supplied 10mm bolts.
5. Use a 12mm line wrench to disconnect the line off of the bottom rear of the master cylinder.
6. Use a pipe plug from the Hurst Line Lock Install Kit and an 11mm wrench to tighten it into the bottom port of the master cylinder.
7. Place one of the 90 degree fittings from the Line Lock Install Kit into the bottom port of the solenoid. Place the other 90 degree fitting in the top port of the master cylinder. Use pipe sealant on the threads before installing. Use a 12mm wrench to tighten the fittings.
8. Use a tubing cutter to cut the line you removed so that it is the correct length to match up with the 90 degree fitting.
9. Use a 3/16-inch by 1/8-inch NPT tubing flare nut from the kit (attached to one of the brake lines) and place it onto the brake line you just cut. This can be cut off using a tube cutter. Use a double flaring tool to flare the end of the line.
10. The line that was removed from the bottom of the Mustang master cylinder should be coming from the driver side front wheel. This line needs to be secured to the bottom front port on the solenoid. Thread the 3/16-inch by 1/8-inch fitting into the 90 degree fitting that is on the bottom port of the solenoid. Use the 12mm line wrench to tighten it.
11. Use a 12mm line wrench to take off the brake line that goes to the rear bottom port on the distribution block.
12. Put sealant on a 3/16-inch by 18-inch NPT male inverted connector from the Mustang line lock and secure it into the left port on the solenoid.
13. Cut the brake line so it can be attached to the left port on the solenoid. Remove another tube flare nut from the brake line in the Install Kit. Place it onto the brake line you removed from the distribution block and cut. Use the double flare tool to flare the line.
14. Attach the flare nut to the connector on the left port of the solenoid. Tighten it with a 12mm line wrench.
15. Take the other half of the brake line that was removed from the distribution block and attach a flare tube nut from the install kit to the end that you cut.
16. Use a double flaring tool to flare the end of the Mustang brake line.
17. Use a tube bender to bend the brake line so that the one end of the brake line will fit into the bottom rear port on the distribution block and the other end will fit into the top front port of the solenoid.
18. Once you have the brake line in the correct shape, attach the brake fittings to the Mustang distribution block and solenoid. Tighten the fittings with a 3/8” line wrench and an 11mm line wrench.
19. Make sure you have the lines in the correct places and they are tight.
20. Move onto installing the light and switch. The light can be installed anywhere but I decided to install it on the bottom part of the dash. Use the torx screw driver to remove the screws that hold the under Mustang dash trim.
21. Use the Phillips screw driver to remove the screws that hold the plastic collar that covers the Mustang steering column.
22. Use a drill to make a hole in the dash panel large enough for the red indicator light.
23. Install the red indicator light into the panel with the supplied nut on the back of the light.
24. Before being able to put the panel back on the dash, use a dremel tool to open a hole up on the dash so that the wiring from the light can fit through it.
25. Use a wire and crimp it to the ground wire on the indicator light to extend it. Crimp a fisheye connector onto the end of the wire. Find a bolt under the dash that you can put the connector through to ground the wire.
26. Run a 12 gauge wire from the inside of the car out to the solenoid.
27. Connect the wire to the supplied fuse in the kit using a connector and a crimping tool.
28. Crimp a fisheye connector onto the other end of the fuse and connect that to the starter solenoid to get power.
29. Feed another wire through the Mustang firewall and use a connector to attach it to the power wire coming from the solenoid.
30. Connect a fisheye connector to the black wire coming from the solenoid and attach it to one of the mounting bolts for the solenoid.
31. Inside of the car, run the wire coming from the fuse to the red wire from the switch. Connect the two by crimping a connector to both of them.
32. Crimp the wire from the solenoid to the black wire on the switch.
33. Run another wire from the wire from the solenoid and connect it to the red wire on red light indicator.
34. Reinstall the steering column plastics and the lower dash plastic.
35. Make sure you have all of the wires connected from the switch to the light, the fuse, and the solenoid.
36. Bleed the brake lines at the solenoid.
37. Start the car and test your new Mustang Hurst Line Lock.
