Warning: Power Cables Are NOT The Same! (4K)

[Frank S]

I get into this argument with truck drivers all the time about them adding too many lights on their trailers
Why do my lights seem dimmer than they used to be and go bad so frequently?
Because you have too many lights for the wiring harness to be able to handle.
But they are all LED and only draw 20% as much current.
Yes but you have added 10 times as many lights as the trailer had from the factory. Your trailer is 53 feet long it takes 240 feet of wire to reach all of the marker lights and all of that current is traveling on a 12 ga conductor with a 15 ft long pig tail connecting the tractor to the trailer which is also only 12 ga. You want the lights to be brighter and stop going bad due to low voltage remove half or them or more, Or run a second dedicated pigtail splitting the load between more than a single wire