System Diagram

Air conditioning (except turbo diesel)
1989 Jetta, German production (from VIN 1G KW 400001)
1990-1992 Golf, Jetta

Tracks 1-14:

Tracks 15-28:

Fuse/Relay Locations:

Description Current track
A/C compressor clutch 18
A/C compressor overheat fuse 5
A/C refrigerant high pressure switch 23
A/C refrigerant low pressure switch 12
A/C relay 13, 14
A/C switch 6
A/C thermostat 12
A/C thermoswitch 15
Fresh air blower series resistance 3
Fresh air fan 5
Fresh air fan switch 5, 6
Main heater fuse 7
Radiator cooling fan 23, 24
Radiator cooling fan after run relay 26, 27
Radiator cooling fan thermoswitch 26

Wire connectors
T1 - single, behind dashboard
T1a - single, behind dashboard
T1b - single, in engine compartment
T1c - single, behind dashboard
T2a - double, behind dashboard
T2c - double, in engine compartment
T2e - double, in engine compartment
T2f - double, in engine compartment
T2g - double, in engine compartment
T2h - double, in plenum chamber, left
T2l - double, in engine compartment
T3a - three-point, behind dashboard
T5a - five-point, behind dashboard
T5b - five-point, behind dashboard

Ground connections
80 - in instrument panel wiring harness
82 - in wiring harness, left front