Powering 5V 5A DC/DC converter with accessory relay
Getting my project on the go, I have another hurdle. I need to power the 5V 5A DC/DC converter, so I was thinking along the lines of switching a relay from the accessory line - instant shutdown is not an issue. Can the accessory line provide enough power to switch an automotive 20-30A relay?
My OEM radio cuts the sound while cranking, and when measured with a DMM there is a drop to 10V with no load - if I find that this is enough to cut the power to the PSU can I then run another relay from the IGN line? (In essence, 2 relays, both from the same battery supply, switched from ACC and IGN)?