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Help - 12v Supply
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Buckingham
 


Member Since: 08 Mar 2006
Location: Hampshire
Posts: 957

United Kingdom 2009 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3
Help - 12v Supply

Hi....
My car is in bits!!!...I have got hold of the supply to the 12v output and want to splice into it for my satnav...not being mechanically or electrically minded in the slightest....which is the pos and which is neg? Got 2 wires, one black the other purple and green???

Help please.....  
Post #8764323rd Sep 2006 3:07 pm
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twincam escort
 


Member Since: 30 Oct 2005
Location: Midlands
Posts: 23

United Kingdom 

Using a simple test lamp or DVM if you have one, connect one end to an earth point (-ve) on your body and the other end to each wire in turn. If it lights or indicates 12V then that is the live or +ve. The other wire should remain at 0V or off.

Be aware that some supplies are only live when switched by the ignition key.

PS if using a dvm select dc volts!  
Post #8764623rd Sep 2006 4:15 pm
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10forcash
 


Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534

United Kingdom 2007 Discovery 3 TDV6 HSE Manual Zermatt SilverDiscovery 3

Where is this supply normally connected to? *normally* black is -ve...
Echo the comments above, use a test lamp or meter before commiting to any connections Wink  
Post #8764923rd Sep 2006 5:28 pm
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Buckingham
 


Member Since: 08 Mar 2006
Location: Hampshire
Posts: 957

United Kingdom 2009 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I have taken the supply from the 12v supply to the left of the ashtray...  
Post #8765123rd Sep 2006 5:37 pm
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10forcash
 


Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534

United Kingdom 2007 Discovery 3 TDV6 HSE Manual Zermatt SilverDiscovery 3

Black is -ve, Purple/green is switched +ve at position 1, fuse is 34 in the CJB  
Post #8766023rd Sep 2006 5:52 pm
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Buckingham
 


Member Since: 08 Mar 2006
Location: Hampshire
Posts: 957

United Kingdom 2009 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Thanks 10...  
Post #8766523rd Sep 2006 6:08 pm
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