Looking to wire an LED light bar. I'm in no way a lighting/electrical expert and I could use help. I've read up on the wiring and watched youtube videos and have got pretty much everything down except for one issue (everything I've read and seen uses a relay set up):

Of course I went and bought a non-relay kit based on a recommendation at a local 4x4 shop. Guy said he used it on his rig and it was a piece of cake. Unfortunately I opened it when I got home and then the questions came up. Here's the kit I have (the fuse looks different but it's the same model number). Here's the diagram for wiring it.

Question is with the fuse that I have pictured here... guessing that I cut the yellow wire in the middle, crimp a wire to one end and run to the + on the battery... and crimp the other end and run to the switch. Am I right?

If not any help is much appreciated. Don't want to cut this thing if I'm not supposed to and I don't want to blow up my JEep. Zero instructions aside from the diagram on the Eagle Eye website. I've tried searching everywhere and have come up short. THANKS

 

you are correct just cut the wire on the fuse in the middle and spilce it in the pos side close to your power sorce

 

you rock! thanks!

 

Since you are wiring an auto and not a house I would run the power from the batt to the fuse and then to the light bar. Then run the ground wire from the light bar to the switch and the other side of the switch to a good ground. That is how Ford Motor company does all theirs and since high priced engineers have designed those things it is probably a good idea.

 

if this helps, here's a pic of a diagram



or more easy to understand, here's a pic of two type on installation you can do. One drive power by the switch, and the other drives the relay ground.
I highly recommend doing the schematic driving the relay ground with the switch, as there is no voltage going through your switch. This is the one on the lower part of the picture.



Here is some more explanation of how the relay works.

The Bosch Relay Unraveled

 

I just made a simple diagram

 

Most of the new aftermarket stuff switches the ( + ) conductor. For most electricians, it's more logical to think this way. Bottom line, it doesn't really matter which way you do it. Neither way is better than the other. Just one way is different from the other.

 

Yea I know, but IMHO, it is better to put the switch on the ground side of the relay, like I said, this way there is no voltage going through the switch. BUT, there is some switches that you are obligated to put it on the positive side if you want the LED to light up when putting the switch on. Like contura rocker switches. But like you said, either way is good as long as the switch drives a relay, and not directly the auxilary.

 

Thanks for the replies and for taking the time to explain things. With the kit I have and there being no relay included, I think I'm going to stick with my original plan. I appreciate the help everyone, thanks!! Will get some pics up once it's all wired in.