Here's another wiring diagram and quote from the famous and handsome (I guess), NX Ricky.
[QUOTE NX Ricky]The idea behind this is when you push/lock in the trans brake, and release your foot brake waiting to launch the car settles. You can see at the track some cars tires move a smedge and the car seems to relax. What that is, everthing from the transmission rearward touching parts have become NONtouching. Like your ring gear, etc.
So you release the brake and now all those non-touching parts slam into each other.
With this wiring in place when you push the transbrake your linelock and front brakes will stay applied. Keeping the car stage, ready for launch. I know it saved my gears from breaking, cheap old street gears.
Anyway thought I would just throw it out there.
Warrning!!! If the diode fails your line lock could activate the transbrake choose the diode appropiate for the amp draw you would to control.[/quote]
Robert