I had a 30 inch across the hood.
How to wire a roof mounted light bar.
The switch will maintain the flow of current on the light bars.
We choose the nilight 52 300w spot and flood combination led light bar because it has both spot and flood lenses in one bar was affordable and had decent reviews on amazon.
I think they are to high and will get caught on trees and what not and get damaged.
How to install a light bar.
Now comes the critical part.
I go though every step so.
Of course using that type of wire gives you 3 wires so i paired up a couple of glands on the rear of the roof where the port installed roof rack went.
I m not a fan at all of the roof mounted light bars.
The rest of the holes i had welded up.
In this episode of project night light i show you how to wire an led light bar properly using a relay.
Also like you stated height becomes an issue when in the garage.
Also roof mounted bars can have a tendency to cause glare on full windshields.
Once it is in the snorkel head the cable will run down into the dirty side of the airbox and will require drilling through the side of the airbox to penetrate the wiring back into the engine bay.
After installing my a pillar mounted police light i m fully aware of just how full the a pillars are.
When having the roof rack installed we added a front 3 slat cross member so that we could mount a light bar it was a 65 addition.
For safety purpose wrap the soldering portion with electrical tape.
By the way i like the location on the rear because it is easy to run the wire up to the roof by just dropping the rear section of the headliner.
Take the red wire of the light and join it with the red wire of the switch.
The joining can be done by soldering.
Although not commonly adopted it is possible to loop the wire from a roof light bar into the back of the snorkel head.
The best way to do this is to drill a new hole in your roof near your roof mount brackets and run the wiring down directly into the cab of the truck.
This is the best method because it is the shortest distance for the wire to travel and it has the least chance of getting smashed in your door jamb.