According to DEI the 98 Beetle does not require a transponder bypass module. But the 99 does.
DIRECTWIRE™ WIRING INFORMATION - VOLKSWAGEN / BEETLE / 1998 / Remote Start
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12volts red + ignition harness
Starter RED / black + ignition harness
Second Starter
Ignition black + ignition harness
Second Ignition
Third Ignition
Accessory BLACK/ red + ignition harness
Second Accessory
Keysense
Power Lock yellow/lt.blue - inside drivers door
Power Unlock WHITE/ green - inside drivers door
Notes: Requires double pulse.
Lock Motor blue / YELLOW inside drivers door
Unlock Motor purple / YELLOW inside drivers door
Parking Lights+ gray/purple headlight switch, pin 6
Notes: There are three gray/purple wires at the headlight switch, be sure to use the one that is in pin 6 to keep the dash lights fuse from blowing.
Parking Lights-
Hazards same as turn signal wires
Turn Signal(L) BLACK/ white + turn signal switch
Turn Signal(R) BLACK/ green + turn signal switch
Reverse Light
Door Trigger BROWN / yellow - theft module
Notes: The theft module is located to the left of the steering column.
Dome Supervision same as door trigger
Trunk/Hatch Pin BROWN / black - theft module
Notes: The theft module is located to the left of the steering column.
Hood Pin BROWN / red - theft module
Notes: The theft module is located to the left of the steering column.
Trunk/Hatch Release theft module
Notes: Use BROWN / purple negative trigger on models with power windows, or RED / blue 5-wire positive on models without power windows. The fuel door can be released with a positive trigger on blue/red at the release switch.
The theft module is located to the left of the steering column.
Power Sliding Door
Factory Alarm Arm arms with lock
Factory Alarm Disarm disarms with unlock
Disarm No Unlock
Tachometer GREEN/ YELLOW ignition coil
Notes: Can also be found as GREEN/ brown behind the instrument cluster in a blue plug.
Wait to start
Brake Wire RED / black + brake switch
Parking Brake
Horn Trigger BLACK / YELLOW + theft module
Notes: The theft module is located to the left of the steering column.
Memory Seat 1
Memory Seat 2
Memory Seat 3
Interface Module: Category:
Immobilizer Bypass Required:
No Type:
N/A
Part #: N/A
Notes:
Interface Module: Category:
Door Lock Interface Required:
No Type:
Data Bus
Part #: IM-Volkswagen-1
Notes:
Smart Starter Kill Relays: Not Available
warning
This wiring information is being provided free of charge on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it using a digital multimeter.
Directed Electronics assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. DEI assumes no liability or responsibility resulting from improper installation, even in reliance upon this information.