I used some plastic "L" brackets to bolt it to the gauge cluster. Looks like ass from the back, bit nobody can see it. I also used a ton of hot glue...lol.
The two relays at the bottom of the pic are for the headlight. They are activated by the OEM headlight wiring harness. Now the headlight gets much more (about 1-1.5) more volts so its a brighter/ whiter light.