I recently purchased an APA102 LED light stip (60leds/m) and read that it requires 18watt/meter, I am using approximately 4.5 meters so will roughly need to provide 81w. I did, however, struggle to find a dual power supply that could provide this, so I settled on an RD-125A power supply that can provide up to 15A at 5v, and am planning on reducing the brightness of the LEDs to 75%, to account for this. 

I was then hoping to have a wire connecting the LED strip to a box containing the rest of the circuitry and the power supply. So I could detach the box, I wanted to have a connector that would allow me to plug the LED light strip into said box, and then from within the box, the connector would connect to the power supply and a raspberry pi. 

My first thought was to use a 4 pole DIN connector and socket, but I wasn't sure if it's safe/advisable to use one when using ~15A, and thus I was hoping to find out if

1. This is safe
2. If not, is there any other connector that would work