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I did not want to steal anyone's threads, so I decided to start a new one.
This is my foldable, Harbor Freight trailer. It is 4x8, on 12" wheels. Very light, rolls easily.
It sits at about 18" hence the tall raise of the tongue.
I used 5-flat along with the standard 4-flat. The 5-flat uses separate signal for turn signals from brake lights. I love this in Bolt (had same thing in 2009 Hyundai Elantra, 2015 and 2016 KIA Forte5 SX, then 2014 Fiat 500e, and now 2019 Bolt).
Since the trailer is all LED, the current load is low enough to be powered directly from the cars harness.
The 4 flat is also connected, in same place (the signal is separated later) and powered extra from the battery.
On the trailer - there are two separate wiring sets - the 5 flat going directly to the lights and the 4-flat that actually goes through "separator" (shown in one of the pictures). Then they merge before the lights, so either 4 or 5 flat will still let the turn signals power up. And also, see below, there are "control lights" so that I can see in the mirror if the lights are operating. To distinguish stop from corner light, I added a resistor. Kill me, I do not recall what size it was
This is my foldable, Harbor Freight trailer. It is 4x8, on 12" wheels. Very light, rolls easily.
It sits at about 18" hence the tall raise of the tongue.


I used 5-flat along with the standard 4-flat. The 5-flat uses separate signal for turn signals from brake lights. I love this in Bolt (had same thing in 2009 Hyundai Elantra, 2015 and 2016 KIA Forte5 SX, then 2014 Fiat 500e, and now 2019 Bolt).
Since the trailer is all LED, the current load is low enough to be powered directly from the cars harness.
The 4 flat is also connected, in same place (the signal is separated later) and powered extra from the battery.
On the trailer - there are two separate wiring sets - the 5 flat going directly to the lights and the 4-flat that actually goes through "separator" (shown in one of the pictures). Then they merge before the lights, so either 4 or 5 flat will still let the turn signals power up. And also, see below, there are "control lights" so that I can see in the mirror if the lights are operating. To distinguish stop from corner light, I added a resistor. Kill me, I do not recall what size it was




