LED turn signal issues

I recent replaced the front and rear turn signals on my 19888 peterbilt with led lights. I switched out the flasher with a 552? Flasher.
My right turn signal works fine, however, my left is very dim up front, barely clicks the relay, and doesn't turn on the lights at all in the rear.

When I stick a test light into the flashing power feed (3 wire setup), my lights work as they should. With the hazards on, they work as it should.

the other 2 wires don't change anything so I don't think it's a grounding issue. It seems like their isn't enough resistance to power the lights on the drivers side and the test light bulb is drawing the necessary energy to power the signals.

 

So why would one side work?

 

The 552 by blaze is advertised as fully electronic. I do however hear and feel it clicking so it can't be 100% electronic. I'll pick up the Grote from Napa tomorrow and give it a shot.

 

Their is a required relay BUT I changed mine prior to writing this and it fixed the issue on one side. I can't imagine how one side can draw more power than the other but who knows lol

 

Fixed. I didn't notice the left turn signal indicator dash light was burnt out. I guess that little bulb drew enough to power the relay!