If you're looking to power up your vehicle and make it unique, custom magnetic signs are definitely the way to go. Magnetic signs are an easy and affordable way to customize your car or truck while still maintaining a professional look. Not only do they look great but they can also add some serious style points if done right! 

Here's how to power up your vehicle with custom magnetic signs:

1. Decide what kind of design you want - Start by deciding on the type of design you would like for the magnetic sign. This could be something simple like text-only or a more intricate design with images, fonts, colors, etc. Don't forget that there are many templates available online that can help jumpstart your creativity.

1. Choose the correct size - Make sure to select a size that’s proportional to the surface area of your car/truck so it doesn’t get lost in too much space (or vice versa). A good rule of thumb is two square feet for every five square feet on the surface area of your vehicle – just enough room for visibility without overpowering its appearance!

1. Get high-quality materials - when choosing material for car magnet signs ensure that it is made from durable outdoor grade vinyl specifically designed for cars, trucks, or other vehicles with metal surfaces where magnets will adhere properly and securely (this is especially important during inclement weather).  Also, keep in mind that using thicker material such as 8 millimeters can provide extra protection from scratches and fading caused by wind & sun exposure over time!

1. Opt for digital printing - If a full-color image is desired then consider investing in digital printing technology which offers superior print quality than traditional screen printing; this method outputs highly detailed graphics at resolution levels comparable to even higher-end billboards advertising companies use today! Plus – no minimum quantities are required when going digital too so don’t worry about having too few or too many printed pieces being wasted due to unnecessary ordering constraints either!

And finally – installation should be relatively straightforward...simply clean off any dirt or dust from metal surfaces before attaching magnetized backing strips on either side; avoid overlapping edges and press firmly all around until a secure hold has been achieved before driving onto public roads safely knowing now you have powered up your vehicle with awesome customized magnetic signages looks ready to show off!