Fog light switch

Hi,
I received a pair of 170 light force halogens, and was wondering if I could just wire them into the fog lights, hence they would be controlled by the switch?
Would there be enough power, and if so, should I put in fuses or straight tap?
I never use my bumper fog/driving lights since they are so bad, so I thought to tie these new lights into those.
Thanks,

 

Assuming the power draw is equal or less, I don't see why not...

Subb'd for curiosity.

 

Well, they would be in addition to my existing bumper fogs, I think they are 55w, and my new ones are 100w. So, not sure if combined just using that wiring will work. I will keep reading, and searching.