Advice on switch type

Tell me what your thoughts are on this.
I'm thinking of running a constant hot or figuring out how to do a standard on/off auxiliary power source witha toggle switch override.

Ideally I would have Auto/constant hot/off. Or a switch from contestant hot to igniitian activated. Any thoughts on how to do this? I have been looki g at diagrams, switches, and everything in between.

I was also thinking of using the same application, ideally, for auxiliary back-up lights so that they activate with the normal reverse but also can have an override option if the truck is off or in park.

Any thoughts?

 

What?

 

Ok, let me try to reword this:
Aux plug with power all the time and use a switch to return the outlet to only being active when the vehicle is on.

On the backup lights: primarily have them linked in with the lightes thack kick on when the vehicle is in reverse but have an override so they can be on without the truck being on or in reverse
Help?

 

Honestly, it may be more complex than your thinking. Any good repair shop can do it for you, it will be alot of work to do it the way you want.

 

That is good to know. I didn't think it would be terribly difficult... I can figure out about anything as long as I have a diagram and know the parts. It doesn't appear that this has been attempted though. May take a different approach on each.
Charging line with direct power and a switch then just tap into the back up lights for the other.

 

You sir are awesome....

 

Just use diodes dude. Way simpler then an on off on switch.

Wire the rear lights strait to the revers lights. Then have a diode on the power for the lights right before it connects to the lights. Then set up a switch like you normally would for the lights. But put a diode on the power wire. Simple as that.

I'm still slightly confused on what you want for the first part...

 

Would it be advisable to add a fuse box under the hood?

 

And thank you all for the help.

 

If you plain adding lights..or other such things..yes get a fun box. Well worth the money

 

Ok. Thanks.

 

Last question, until I actually start working on this thing this weekend.
If I add a fuse box and run these items off of the fuse box is my thinking right that: Each existing reverse bulb draws 1.6a and each 55w draws 4.6a so:
(1.6a*2)+(4.6a*2) = 12.32 Amps i.e. fuse needs to be 15 amps?