temp gauge skyrockets when I turn on the high beam
 

So Ive been working on my bike lately and when i finally got my gauges connected i noticed that when i turn on my high beam the temp gauge shoots through the roof. does anyone know why this might be happening? did i somehow get some wires crossed? it doesnt come up in the service manual and im a little baffled how this might happen, so please help if you have any ideas! :) thanx!