Will this work with nilight 18026c-a 37inch 780w triple row flood spot combo bar 78000lm driving waterproof led work light off-road t?

Are you sure the Watts you quoted is correct? 780w at 12V is 65Amps. I doubt this bar needs that. Its probably an equivalent to halogen light level. Check the actual current this draws. Then text me back. I see other users use a 30Amp fuse. So im pretty sure this kit will be fine

Why does my light bar sometimes stay on and not shut off?

You have it wired wrong, use ignition power, so when car/truck is off the light bar turns off 100% of the time.

The lights will not go out. Even disconnection swith will not turn lights off (have to pull fuse). T

I would check the connections on the relay itself if it’s wired backwards it can keep the power on all the time

Trying to understand the wires that go to the rocker switch, is black for ground ( - ), red for battery (+), and white?

Coming out of the relay are 3 sets of 2 lead wires, ..2 black (ground, attach these to the top left and right of the back side of the switch # 7,8), then 2 red, Positive,one will go to the single middle connector, #2. Now here’s your choice, if you want the face of the switch to light up even when the switch is “off”, hook up the other red lead to # 6 on the bottom right. If you don’t want the switch to always light up when “off”, then hook up the white 2 leads to #3 &6. Wrap electrical tape around the extra wire, either red or white, that’s not connected according to your choice. Hope this helps.

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Description

🔋 Power up with confidence—switch on safety and style!

WATERPROOF DESIGN - Sealed components withstand harsh environments—ready for any adventure
HEAVY DUTY 12 AWG WIRING - Superior electrical conductivity with high-temp resistance—durability you can trust
UNIVERSAL COMPATIBILITY - Fits all 12V vehicles, boats & devices—plug & play convenience
ADVANCED SAFETY FEATURES - Power relay & blade fuse protect against shorts & overloads—peace of mind guaranteed
BUILT IN LED ROCKER SWITCH - Soft glow LEDs for easy nighttime operation—never fumble in the dark

The Nilight 10019W LED Light Bar Wiring Harness Kit offers universal 12V compatibility with heavy-duty 12AWG wiring, a built-in LED rocker switch for easy control, and advanced safety features including a power relay and blade fuse. Its waterproof design ensures reliable performance in all conditions, backed by a 2-year warranty for lasting durability.

Specifications

Item dimensions L x W x H	11 x 2 x 5 inches
Brand	Nilight
Form Factor	Bar
Recommended Uses For Product	Vehicle Exterior
Auto Part Position	Front
Included Components	1PC Rocker Switch Wiring Harness Kit
Special Feature	Waterproof
Item Weight	1 Pounds
Material	brass
Water Resistance Level	Waterproof
Remote Control Included?	No
Number of Pieces	1
Global Trade Identification Number	00600537012806
Manufacturer	Nilight
UPC	600537012806
Model	10019W
Item Weight	1 pounds
Product Dimensions	11 x 2 x 5 inches
Item model number	10019W
Is Discontinued By Manufacturer	No
Exterior	Painted
Manufacturer Part Number	10019W
Special Features	Waterproof

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