they would face downish and mountain bike

Bike as in bicycle or motorcycle? These are really bright, not sure how having them on while driving would work out seeing as how I'm pretty sure rear facing white lights are illegal.

hmmm that seems like a good idea i want it to light up when im still driving but not have my dome light on (i like to watch my bike when im driving since i dont strap it down) lol but want to have control of turning it on/off

I think it came with one, but I wired it into the same circuit as the interior dome light. This way it comes on when the doors open, when I unlock the doors, or when I push the dimmer all the way up to turn the cargo/interior lights on.

how did you wire it? what switch (unless it comes w one?)

Its just the recon LED bed rail lights, it came with 4 sets on each side but I cut the 4th one off leaving 36 LEDs.

http://www.gorecon.com/products.php?...2FCargo+Lights

what are the specs of ur bedlight set up?