passenger side dome light switch

don't know if it's been posted before but in case anyone runs into it.

bought Nissan replacements for dome light door switches (both are 2 wire). drivers side 2 wire easy, plug 'n play. exactly as original.

passenger side on my 5/71 240z was only 1 wire. replacement switch had two wires. apparently Black Dragon ships same part for both sides.

made adapter to plug in female to female what i assumed was hot wire (+) to connector (center post conductor).

assumed ground wire would not be needed since body of switch would be grounded by contact with frame (like OEM). left the wire attached to body of switch (-) dangling.

shut pass door, light stays on.

unplug wire to center lead, tape off center lead, plug in ground lead (attached to body of switch).

shut door, dome light goes out.

sorry Enrique and Dave (Zs-ondabrain).

yes, i am an electrical idiot.