OK.  So cleaning up this bird's nest of a wire bundle that the previous owner made for me.

I have everything working and running like a top.  The only problem I am having is for my tail light/brake light.  

I am running a 2 filament bulb with a side mounted tail light.  I am running my brown wire (positive) and utilizing the white with black wire for the grounding.  

Yesterday everything was hooked up and working fine, but since tackling this section, I cannot get the lighting to work properly. I cannot even get the bulb to light up.

If I use the black with white wire, my bulb works but no brake indication.  

Is it feasible to think that I could utilize both ground wires for proper function?  I am thinking that I will short it out.

Any suggestions?

forgot to say that my setup is not the stock tail/brake light assy either. aftermarket cat eye