One wire side marker lights
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,150
Likes: 5,785
From: S/W Missouri, Polk county
Side marker lights for what? Some how that bulb socket is touching the mounting screw/screws. Maybe the same way a dome light gets its ground with a metal strip.
If the marker or clearance light only has one wire, then this wire is for power and the light grounds though the mounting hardware. If the new light has only one wire and is installed in a rubber grommet, then you will need to run a ground wire off of the mounting hardware and to the truck frame/body.
If the marker or clearance light only has one wire, then this wire is for power and the light grounds though the mounting hardware. If the new light has only one wire and is installed in a rubber grommet, then you will need to run a ground wire off of the mounting hardware and to the truck frame/body.
Fleet Mechanic
Joined: Sep 2014
Posts: 1,626
Likes: 78
From: NE Texas
Bet if you check when installed you will get grounding through the side of the actual bulb holder because the manufacturer has a metal clip in the injection molded plastic from the socket to a screw.
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