I had to use the powered trailer light adapter kit.  The one without a 12v power wire wouldn’t work because the voltage at the splices was not a full 12volts. 

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> On Jun 21, 2020, at 4:18 PM, Thomas Casal <thomas.casal@gmail.com> wrote:
> 
> Sorry to bother everyone on a Sunday. Trying to wire up my trailer cuz I’m
> Moving next week. So I finally have to try and get this done. The dang
> trailers been sitting in my garage for 4 years cuz I was pretty sure this
> simple job would be a pain in the neck and it is.
> 
> I’m  using the wiring harness from goWesty pretty generic wiring harness as
> expected. I made my connections in the black junction box. I used mostly 16
> to 14 gauge splice connectors the ones that snap closed and one 18 to 20
> for the white ground to brown ground splice because the 16 wasn’t able to
> penetrated the plastic sheath and contact the tin. I was hoping that was
> the issue when I found it but nada. I spliced it to the skinny ground wire
> where the white connector is could that be the issue? it’s where the two
> ground wires connect to the one in the white connector. I quadruple checked
> everything as far as wire to wire that’s all good. I’m guessing the splice
> connectors aren’t working or am I missing something? Before I go using
> regular butt connectors and cutting wires I figured I’d ask for words of
> wisdom from the tribe. I was even thinking of getting the splice connectors
> that have the little plug on the side maybe they work better I dunno? Any
> words or wisdom from the tribe is greatly appreciated. Peace and happy
> Father’s Day.