Col and myself both have LED side lights so that should not be a problemYou need a switched live for the main power unless you have the type of controller that connects to the battery and senses engine start. The black and yellow wire Russ suggests is the one I used as per instructions for my Piecha DRLs
I have a hunch that maybe your trigger wire connection to the side lights could be the fault, so re-check that connection. Check the instructions that came with your controller and if it's wired correctly and all connections are sound then it looks like it's a duffer!
Looks like you already tapped into the block. Yes I did use a ring under one of the terminals. I have Phillips LEDs and controller. My controller automatically turns on the lights when it senses current from the battery. It is also wired into my side marker lights which then turns off the LEDs when my light are on.Hi PitchRate really helpful pics and something I hadn't even considered. Which terminal did you connect to ? or doesn't it matter. Also did you just use a ring terminal under one of the nuts. Thanks