Will these mount to my factory cab light brackets without any modification?

Yes. These are designed to use factory mounting points directly. No drilling or bracket fabrication needed—pop out the old housings and swap these in.

Do the amber LEDs produce enough light, or will my cab feel darker?

Amber LEDs are brighter than stock incandescent and deliver cleaner color. The smoke lens does reduce output slightly, but it's designed to cut glare without sacrificing usable light for cabin illumination.

What if one of the units stops working after I install it?

Test both units before final installation. If a unit fails, contact ModSupply with your order number and photos of the defective assembly for a replacement evaluation.