Wiring a cigarette lighter

[jameswright]

Hi,

Hoping someone can help? I purchased a universal cigarette lighter to replace the one in myRenault Megane, as it wouldn’t charge my sat nav. When I removed the old lighter, which wasattached with block connecter, I’m left with 3 wires: Yellow, Blue &Black. Does anyone know how I shouldwire these to the new lighter? I haveattached a photo showing the wires and new lighter. Any help would be greatly appreciated.
Regards

James

 

[Richard Burns]

Compare with your existing lighter and see where the wires go.
On your universal the centre contact is positive +12V and the outer contact is earth (normally -12V, but check you are negatively earthed) the light should be connected in parallel with the heater element, use red for positive +12V, black for negative.

If you cannot tell then check with a voltmeter which existing wires become +12V once the ignition is on.

 

[tazz]

You will need a meter to test original cables, and are looking for +12v, -12v and a switch +12v when lights are turned on.
on new lighter red wire is +12v from lights, black is -12v, otter casing spade connection is -12v, and inner spade connection is +12v

 

[jameswright]

Many thanks for your help Guys!