Tyco makes more relays than Bosch. They are also referred to as ice-cube relays. The two main sizes are 40 amp and 70 amp (although some are listed as 30 and 60 amp). the cheapest place to get them is digikey or newark, although cole-hersee and waytek have good prices as well. If you have a situation that you can not live with contact bounce, then make sure to get the diode suppressed ones.
Hella makes a really nice 4-relay gang box that you can get from any car-quest and napa - dont even try to talk to the folks behind the counter at a pep-boys, checkers, advanceautoparts or auto zone for these because they usually dont carry them, and their computer doesnt list them.
