BUY YOUR FIRST KEY...
Effective, When used right.
A KEY.
Battery (KEY'S).
Alarm.?
G.P.R.S.
Gauge's.
Aftermarket ECU/Computer.
Injector's.
Spark Plug's.
Ignition Coil's.
Ground or Negative, Multiple strap and monitored.
Extra road lighting.
T.V.
Camera's/Dash Cam/Reversing monitor and screen.
Radar detector.
Radar jammer
Waste Gate and B.O.V Adjustment's Electronically.
Other Accessories.
Turbo Timer.
Horn.
Fuel pump.
Sensor's.
Rolling identity codex.
Remote Engine Start (Some of them are inside the alarm).
Hand's free car kit.
Audio/Visual.