Where is diagnostic port for 1992 vw cabriolet

SOURCE: where is the radiator fan switch located on a 1992

IT IS LOCATED ON DRIVER SIDE OF ENGINE BEHIND THE THERMOSTATE HOUSEING IT HAS TWO WIRES YELLOW AND BROWN HOPE THIS HELPS .
--------------------------------
there is a fan control relay under the dashboard with the other relays check that then check the temperature contreol module theat is located in the engine compartment
--------------- there is a 2 speed sensor/sender on the lower part of the radiator, facing the driver. It's on the tube at the end of the radiator. The fan motor has three leads, an orange, which should be hot, and is monitored by a 40 amp fuse located either on top of the battery, or with the fuse modules/relays under the dash. (according to the book, I still can't find mine, it may be NEXT to the battery. The negative must be thru the chassis, so it would be a good idea if, at temperature, with two hots going to the motor, look for a shorted ground. If one of the hots isn't, then the sensor or 40 amp is bad. After those are ruled out, it's the motor.

SOURCE: I have a 1992 VW Cabriolet about 3 000 rpm it

The vibration at that high rpm is most likely coming from the torque convertor and if a manual transmission , then clutch issues.

SOURCE: Lowering back seat in a 1992 VW Cabriolet

There is a seat realease in the trunk, on the drivers side you pull out, it's round. There is a strap to pull the seat down, feel in between the seat and trim panel... they sometimes break off so yours may not be there.

SOURCE: 1992 VW cabriolet, cooling fan will not shut off

You shoulr replace the cooling fan relay,at least check it by pulling it out to see if the fan shuts off.I'm not sure where it is but they use to put the just above where the clutch pedal is located under the dash,but that was in an older model.

SOURCE: 1992 mk1 vw golf gti cabriolet fuse box diagram?

show me 1992 vw golf fuseboard