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Jonno1968



Member Since: 24 Oct 2013
Location: Leicestershire
Posts: 245
United Kingdom 2010 Defender 90 Puma 2.4 XS CSW Orkney Grey
Amps query
I have just bought a pair of 100w driving lamps. I think i need a separate relay switch to operate them but dont know what amps they will pull. The wiring kits state the amps but dont say what that is equivalent to in watts? Any ideas
Post #349043 2nd Aug 2014 6:42pm
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90XS



Member Since: 01 Aug 2014
Location: Shropshire
Posts: 76
United Kingdom 2013 Defender 90 Puma 2.2 XS CSW Corris Grey
To be exact, 8.33 amps each, ie 16.66 amps for the pair. You would probably want to allow a slight margin above this, so I would say 20 amps minimum. Hope this helps!
Post #349044 2nd Aug 2014 6:49pm
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558
England 
you will need a relay and as above Thumbs Up
Post #349049 2nd Aug 2014 7:04pm
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Rickydodah



Member Since: 14 Jul 2014
Location: East Sussex
Posts: 1091
Re: Amps query
Jonno1968 wrote:
I have just bought a pair of 100w driving lamps. I think i need a separate relay switch to operate them but dont know what amps they will pull. The wiring kits state the amps but dont say what that is equivalent to in watts? Any ideas

For future reference if you divide the wattage output by the voltage, in this case 12v it'll give you the amp draw. Thumbs Up
Post #349054 2nd Aug 2014 7:14pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 19579
United Kingdom 
20A fuse with a 30A rated 4 Pin relay.
Vehicle Wiring Products will have all you want, I'd use thinwall cable too.
Post #349069 2nd Aug 2014 8:38pm
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