Mud-club

Vehicle & Technical => Range Rover => Topic started by: petergalileo on April 04, 2006, 14:20:32

Title: Whats this voltage sensetive switch for ?
Post by: petergalileo on April 04, 2006, 14:20:32

Got a yellow Relay in a range rover marked up as PRC 4427 - voltage sensitive switch.  Its not connected to anything and I am curious to find out what its for and what it does and whether it could be used for anything else.

Any ideas ?

Thanks

Title: Whats this voltage sensetive switch for ?
Post by: muddysteve on April 04, 2006, 14:38:33

might be to do with the heated screen, this wont work unless the alternator is running and putting out power

Steve


ps. thats just a guess  :wink:

Title: Whats this voltage sensetive switch for ?
Post by: petergalileo on April 04, 2006, 21:05:32

Managed to decipher it from the wiring diagram.  For information it is fitted to air-con models.  It cuts out the heated screen if the air con slows the engine down too much and reduces alternator output I think.

Title: Whats this voltage sensetive switch for ?
Post by: muddysteve on April 05, 2006, 21:17:15

see i'm a mind of useless information me


Steve

Title: Whats this voltage sensetive switch for ?
Post by: Range Rover Blues on April 08, 2006, 17:38:41

So it could be used for a split charge system then?

Title: Whats this voltage sensetive switch for ?
Post by: petergalileo on April 08, 2006, 17:42:41

not really, it has an input and an output and a switched output that only goes live when the voltage is above 13.8 volts I think.

You only need a standard automotive relay for a split charge system anyway.