And I didn't use heat sinks.
So do you think this: http://www.partco.biz/verkkokauppa/product_info.php?products_id=5070 can be good for me? And if I use that have I use heat sinks?
Yes I used DC. But why can't 17A 70W fet handle one halogen which is only 50W? And I want to dim the lights with pwm if it's possible.