CLASS RACER FORUM - View Single Post - Wiring/electrical question in race car wiring

magnumv8 · 05-09-2011, 08:44 PM

A relay is an electrical switch, it allows you to turn on and off a high current circuit with a low current control.....that is why you normally control an electric fuel pump, water pump etc. with a relay that is controlled by either the ignition on a carb setup or the ECU in an EFI set up......you normally would fuse these circuits because you wouldn't want an auto reset breaker on them....if for some reason you would get a short in the electrical system the auto reset breaker would keep resetting until something fried.....you can install a manual reset breaker which does act like a fuse and can be reset to see if there is still a short or just a temporary spike which popped it.....what is nice are the resettable breakers that go in place of a fuse in your fuse block....

D L Rambo....

05-09-2011, 08:44 PM	#4
magnumv8 Member Join Date: Feb 2009 Location: Coraopolis, Pa. Posts: 172 Likes: 0 Liked 0 Times in 0 Posts	Re: Wiring/electrical question in race car wiring A relay is an electrical switch, it allows you to turn on and off a high current circuit with a low current control.....that is why you normally control an electric fuel pump, water pump etc. with a relay that is controlled by either the ignition on a carb setup or the ECU in an EFI set up......you normally would fuse these circuits because you wouldn't want an auto reset breaker on them....if for some reason you would get a short in the electrical system the auto reset breaker would keep resetting until something fried.....you can install a manual reset breaker which does act like a fuse and can be reset to see if there is still a short or just a temporary spike which popped it.....what is nice are the resettable breakers that go in place of a fuse in your fuse block.... D L Rambo....