Does this light bar work on my 36 volt Golf Cart?

Yes. this LED bar light is designed for 10V-60V use. You can use it on 36V or 48V Golf Carts, E-Bikes, forklifts etc

Whats the difference/ advantage comparing with regular 24V light bars if I use on my 24Volt truck?

When a truck is speeding, carrying heavy loads, or climbing, the voltage output may access to 30V or more which is the limit of the conventional light bars. San-Youngs 60V light bars are more stable in comparison.

Can I mount the light bar in the front grill where the space is very limited?

Yes if the space is not less than 8.5L x 2.0D x 1.8H inches (Pls refer to the dimension photo)

Is is possible to adjust the light bar bracket to the target direction?

If you use the low brackets, No

If you use the high brackets, Yes you can adjust it. But the high brackets need a bigger space ( 9L x 2.5D x 2.5H Inches)

Both is included in the pack

What kind of brackets come with the light bar?

There are 4 brackets (2 pairs )come with 1 light bar.

You can mount the light bar with low brackets for small spaces, or with high brackets if you need to adjust the lighting angle