Tony,
on a number of turbo timers those two wires are generally for external sensing to disable the car, safety features.
don't quote me on these, as I'm not positive, you could use the info to confirm, or someone else here may be able to confirm this...
Brown wire: connects to the parking brake wire (it must be engaged for the turbo timer to operate, if it's lowered, it shuts the car off)
Purple wire: connects to the speed sensor off the ECU (it will detect if the car is moving, ie. someone trying to drive it away, with the parking brake on, will sense the speed thru the ECU and shut the car off..)
hope this helps.. but again, confirm what I've mentioned here before hooking them up
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93 Talon Tsi AWDsealed for freshness
www.geocities.com/MotorCity/Street/1125/