Aleromod.com - View Single Post - Convert the cigarette lighter or accessory outlet to switched 12V.

RalphP · 02-22-2014, 10:51 AM

Rather than mess with the current lighter socket, I'd add one, wired to the same always-hot source, but through a relay, fed from a switched source.

Here's the pin numbers on how to wire up a Bosch-style 4 or 5 terminal relay (the 5 terminal just has an extra one you could ignore for this purpose)

Or you could wire it in sequence with the lighter.

One nice thing about using that 30A or 40A relay is that if you forgot and shoved the cigarette lighter in there, you wouldn't fry the relay. Use heavy enough wire and a big enough fuse, and you could still run the lighter off that new socket!

RwP

02-22-2014, 10:51 AM	#14
RalphP GX Member Join Date: Aug 2012 Location: Bossier City, LA Posts: 179	Rather than mess with the current lighter socket, I'd add one, wired to the same always-hot source, but through a relay, fed from a switched source. Here's the pin numbers on how to wire up a Bosch-style 4 or 5 terminal relay (the 5 terminal just has an extra one you could ignore for this purpose) Or you could wire it in sequence with the lighter. One nice thing about using that 30A or 40A relay is that if you forgot and shoved the cigarette lighter in there, you wouldn't fry the relay. Use heavy enough wire and a big enough fuse, and you could still run the lighter off that new socket! RwP