help with prank

[fourfourto]

It sounds like you would have to run a power wire from his battery to power it then a remote relay to switch it to the live wire.
RC car stuff or radio shack.

Pranks are fun
If he has hubcaps you slip some BB's in there and remove them a day latter then do it again and tell him its his muffler bearing.

We did that to a buddy years ago it drove him nuts.

Another good one is use a pack of fast food Ketchup fold in half ,point seam in and place under the toilet seat(under the spacer).
when he sits down it will shoot on his but and he will notice a slimmy wipe and when he looks he will see red.