Lets see, I've set about 40 diff cars up with these....its not rocker science. I had my pump mounted to my rear frame rail on a piece of 11 ga. The thing you want to do is to mount your pump and tank as low as you can get it, pump your water UPHILL, at the squirters either above the tires or inside the tires, have your long metal tubes that are your squirters pumping fluid to the very center of your tire. On track cars that have these, the squirters are to the inside of the rear tires, that way, after the burnout, if any dribbling occurs, it won't be on the fresh rubber that you've just peeled down to.
On the streetcars, the long metal tube (the squirter) are not used, though could be. I use a vacuum cap, pushed onto a nipple. Then I grab my trusty pin-vice, have a .032 hole in it. The rubber closes the hole up, so theres no dribbling, the siphoning action is halted, and only pressure inside the line from the pump will push water out.
You'll have to play with the location of the hole, and the size. you might want to do several small ones, depending where you mount yours. My squirters are going to be located at my kickup, right at the edge of the body, and I'll be squirting water about 6" above where my tire meets the ground.
On my Killer6 I just sold, I had 2 cheap universal plastic squirters above my tires mounted on my turtle deck, they were small and black and my body was black also, you have to look really hard to see them. I also used those small aquarium valves from WalMart to lower the pressure to the squirters to just shoot the tires and not someone next to me. My pump would blow the lines off at those little valves, so, I put just a dab of silicon on the barb to keep them inplace....
I used a pushbuttion under my dash to activate my pump....that way nobody would fiddle with it....
