I like using relays for accessories. When trucks were used to actually work in the 50's and 60's ignition switches and headlight switches burned quite regularly. But in those days, drivers knew how to bypass the switches and make it back to the shop. It wasn't until the 80's that trucks began using relays. We retrofitted our trucks with relays and eliminated a lot of headaches during the mid 80's. Our over the road trucks now have a bank of about 20 relays and we have almost no problems. Hella still makes 6 volt relays. I'm sure other manufacturers do too. You must remember 6 volt draws twice the amperage as 12 volt.
