Join Date: Dec 2002
Location: Saint Louis, Missouri
Re: A/C D/C switches. Am I going to burn my car down?
You can design and build the system how you want but have you considered using relays ?. On an old custom car of mine I used some basic lighted toggle switches wired to Bosch relays and have never had issues. These are the small cube style relays with a 30A/40A rating. While it's been years since I did any work on this system, I believe most of the circuits on the 30A/40A relays are only passing or having to switch 20A or less.
On this car I have a row of the lighted rockers with one switch sending a signal to a relay to turn on the parking lights then a switch next to it to send power to a relay for the headlights. I then have even more for turning on things like the wipers (which was nice using the relays as the wipers are switched on and off with grounds).
The older cars headlight system gets power from the battery but it has to go through all kinds of connections, wire and wiring lengths to eventually get to the headlights and then back to the battery to where there have been people that run relays on the headlights to keep the voltage drop to a minimum and then turn these relays on and off using existing wiring or through a basic low amperage switch.
1974 Spirit Of America Nova (being restored), 1973 Nova Custom, 1968 Chevy II (Garage Find 2012)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.