Good day gents!

I have the model in the Title. This bike was given to me without turn signals. I would like to install some. The bike has been severely altered...4-in-1 exhaust, street fighter scheme... besides the point, here is my issue:

1) I went poking around for the flasher relay...I found one, it has two prongs, with all the wires attached EXCEPT the green lead...it is also a 20A flasher. I am assuming this bike may have had a 3 prong flasher?

2) I have a set of rear LED lights. I did not know if the system required all 4 LED flashers installed to function properly but I tried this...When I go to switch the blinker to the left my LEFT REAR LED light will blink and the flasher will go off (click, click), bright and strong as normal and the turn signal notification blinks on/off. BUT When I switch it to the right, the RIGHT REAR LED will burn steady, yet half as luminous and the flasher is silent...and the turn signal notification does not blink.

Is this because the system needs a different flasher (maybe 2 to 3 prong), or because I need to install all the 4 LEDs front and rear? I only have two right now, hence my testing. Its odd that the LEFT REAR LED blinks with no problems?