Dim front side marker lights
 

My front side marker lights are dimmer than the rear. Bet it's a bad ground. The rear are grounded to the bed. Can't tell where the front are grounded as the wires are inside wire looms. Any idea where the factory ground for the fronts will be? It's the original wiring.
Thanks

Re: Dim front side marker lights
 

Just read on an old post the front side markers ground through the parking lights. Is this so? I don't have my bumper and parking lights on the beast yet. Waiting for help with the bumper install.

Re: Dim front side marker lights
 

When I built my 68 I added extra grounds from the frame to the engine. Then from the frame to radiator support. I would add grounds from the box to the frame.

Re: Dim front side marker lights
 

If you want flashing side markers they have to be wired through the turn signals.

Re: Dim front side marker lights
 

Here's a post from 2009. They do go through the front parking lights. Problem solved.

Re: Dim front side marker lights
 

69-70 are grounded direct and do not flash. 71-72 front side markers are grounded through the front turn bulb element. This makes them alternate flashing with the front turn lights. Because the ground is through the element LED's cannot be used in front turn or front side markers on 71-72. Even if a standard bulb is used in the front the resistance of the bulb will not allow an led side marker to light because it draws so little power.

Re: Dim front side marker lights
 

Thanks Richard. We must have posted at the exact same time. And thanks Truckster.

Re: Dim front side marker lights
 

Wiring diagrams and manuals are available in pdf format here so you don't have to comb posts for this info:
https://67-72chevytrucks.com/vboard/....php?p=5781194

Re: Dim front side marker lights
 

The links to those downloads are all sorts of corrupted with spam now. I would not download anything from there. If there is a specific post that avoids this mess, please indicate which one.

Re: Dim front side marker lights
 

Installed the front bumper and parking lights on the 72. AAARRRRGH! Anyway the front side markers are bright as day. Thanks for the help.