You can absolutely install rock lights without drilling! There are a few different ways that you can go about doing this. The first option is to use double-sided tape. This will give you a very secure hold, but it may be difficult to remove later on down the road. The second option is to use zip ties. This method is not as secure, but it is much easier to remove if you need to. Simply find a good spot on your bumper or body panel and wrap the zip tie around tightly. The third and final option is to use magnets. This is by far the easiest way to install rock lights, but it does require that you have metal on your vehicle in order for it to work properly. Magnets are also very easy to remove, so if you ever need to take them off, it won't be a problem.