Upfitter upgrades

[sau4u]

I have the 2008 f350 with the upfitter switches. They read as 30 amp, 30 amp, 15 amp & 10 amp. I have stuff rigged into all of them, the big ones at least. My 10 amp is still free, I want to rig in another set of KC foglamps on them but not sure if the 10 amp will be ok for them. What would happen if I replaced the 10 amp fuse with a larger fuse, or should I also be looking at replaceing the wire to the switch also. Thanks.

[rod.10853]

You could just use the upfitter switch on a relay and let the relay handle the heavy load for additional lighting. Make sure to put a fuse on the 30amp relay circuit ... then the switch and the load will be 'protected' by a fuse ...