All of the lighters I've seen have just one wire and it goes to the battery so that it can be used without turning on the key. Does the lighter have a light? If so, that might be what the green wire is for. The lighter is grounded to the dash. Hope this helps. Good luck and keep on truckin'........Jerry
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'68 c-10 long wheelbase fleetside, been in family since new, originally 250 3 speed
Now (389) 350 .060 over 3.75 stroke,Edelbrock Performer RPM 70cc heads and Intake
600 cfm Edelbrock,Small Comp Cams retro-roller cam and roller rockers,9:1 cr, headers, HEI,Old Air a/c, 72 power disc brakes w/stainless lines, 3.42 gear,T-56 6-speed, original paint(what's left of it). Dakota Digital Dash
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