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under bonnet next to the batttery
check the wires and switch and maybe relay
Pull it out, and plug a new one in.
Don't sell the car, its probably just a relay that need replacing.
replace heater relay and or heater blower motor
To replace the parking light on a Vectra you need to lift the relay box which rests between the battery and light. Then, pull the three pin bulb out and put a new one in its place.
sounds like the towing electrics have been wired up wrong
The relay is bad.
There is an electronic relay switch which turns on the rear brake lights-It's located behind the brake pedal- It clicks when you push the pedal down, making contact.
Go To Your Underhood Fuse/Relay Center Located Near The Master Cylinder. You Will Find The Relay There.
The location of the cooling fan relay on a Vauxhall Corsa is under the dash. It is in the relay box on the driver's side.
Your relay has melded itself. Which means that there is a direct current at all times going to the heater fan motor. Remove the existing relay and replace with a new one.