Help with building a wire harness

Ok guys I am not all that great with electrical stuff but I take a lot of pride in things I do so I want this to be perfect. I am adding 3 pairs of led pods to my truck. 2 pairs will be in the bumper and one pair will be ditch lights. I want to set them all up on relays. I want to put each pair on their own switch but I also want a master switch to turn all of them off or on depending on the position of the individual switches. I have kind of sketched an idea of what I think I need. Let me know what you guys think.

Also, what gauge wire should be used for the entire thing? I was thinking 16ga.

 

And I found these relays on Amazon. Will they work?

Genssi 30/40 AMP Auto LED Light Bar Relay Wiring Harness SPDT 12V 40A (Pack of 5)

http://www.amazon.com/gp/product/B005HFYE1O/ref=oh_details_o01_s00_i02?ie=UTF8&psc=1

 

So you're wanting the master switch to be dependent on the individual switches (Ie, if pair one is switched off, the master switch does not light them up)?

 

The purpose of the master switch for my application would be to take the power away from the undividual switches unless the master switch was in the on position. If that makes sense.

 

Oh okay. So you're wanting a master kill switch?

 

Yes, basically. I want to be able to turn all the lights on or off with one switch vs. having to turn each switch every time, but also have the ability to select individual lights.

 

The closest you can get to that (With a simple setup) is to have a master switch to run the power for each light switch off of, kill the master switch and all lights go out, turn on the master switch and all the lights with the switch in the on position come on.

 

Okay. Give me a few minutes to draw a quick schematic with what I think should work.

 

With a 3 position relay where you have your relays and the master switch a 3 position switch you could make all the lights come on at once.

 

With running a relay setup though can't I just put the master switch to disconnect the power in line before the individual switches. With the master switch in the off position shouldn't it take away the power that the individual switches need to trigger the relays into the on position?

 

I THINK this setup should work. It's similar to how I have my CB wired with its in-line kill switch.

 

Yes, the master switch will be the power switch for each light, no power to the switch=no power to the relay=no light.

I think with a 3 position master switch and 3 position relays you can bybass the individual switches on 1 setting of the master switch and have current to every relay.

 

Aight man, good luck!

 

Perfect, thank you. I think that's what I was trying to draw, just way better. When all of my stuff comes in I'll put it together and update this thread.

 

I'm confused on the diagram. I'm assuming one feed is illumination? And not a double throw?

If so looks good.

 

If you are talking about the switch, one wire goes to the relay, one is positive, and the other is a ground.

 

I've got another question guys, ehat gauge wire should I use to build the harness? Can I use 16ga for the entire thing?

 

All depends on how many amp's/watts your light are pulling. between your circuit tap and switches 16 gauge is fine but your hot line running from your fuse box should be thicker depending on how many watts your going to be pulling

 

Here this will help. I personally always go one size bigger if I can.

 

Yeah, you can always use a bigger gauge, but a smaller gauge could be catastrophic. Calculate how many amps you'll be pulling and go from there.