Fuses fail for one reason, they are over loaded past their amps rating.
Many times a year I have vehicle owners drive in and ask us to look at their fuses. A fuse does not fail just because it’s old. They fail due to the load placed on them. 
Over loading a circuit with aftermarket equipment is the most common reason for a fuse to fail “blow out” In a home, you have 
circuit breakers that protect each circuit within the home.
Fuses in a vehicle do the same job of protecting the electrical circuit, but if they fail you must remove the bad fuse and install a new one in the fuse box. Before you install a new fuse, its important to check to see why the fuse failed.
(What caused the fuse to fail) Just installing a fuse without looking for the reason it failed is not going to fix the problem. The second most common reason we see fuses fail is due to coins or metallic junk getting into the 12V aux/lighter socket. 
I have found ear rings, small tokens, and paper clips stuck in the 12V power sockets. A direct short to ground will cause a fuse to fail instantly. 
Once you remove the junk from the socket the fuse can be replaced. At our service desk we offer free 12V socket to USB power adapters to plug into the open 12V sockets, just to prevent issues like junk or coins from getting into the socket and shorting the terminals in the socket
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A 110V inverter to power a laptop can over load an accessory fuse circuit. 
You do not want to use an inverter larger than 150 watts on a 15 amp fused circuit. Most basic 12V sockets only have a 15 amp fuse to power the socket, and its easy to pop a fuse with an inverter, cell phone, and GPS navigation all plugged in at the same time.
HeyAnthonyAz.com – It’s all good under the hood.
We re-finish plastic head light lenses all the time.
Not all lenses can be saved. Rock pits, scratches, and plastic cracking can not be fixed with sanding if it’s too deep into the plastic surface. 20% of the head lamp housings I run across in my shop have major damage and need to be replaced.
The process of refinishing the plastic lens is fairly simple, and many parts stores sell DIY kits to sand, polish and protect the plastics.
So here it is in a nut shell, we clean the plastics, wet sand the imperfections out of the surface. Then use a 2 step polishing compound to restore the clear as glass look. Last step is a double coating of wax. Regular car war works fine for this.
Filters protect your car from harmful debris that can cause damage to internal moving parts. The engine, and transmission need service regularly to keep them alive and happy. So what about you, the driver? Back in the mid 80’s some European car manufactures started adding air filters to the A/C system. Mercedes-Benz called it a particulate filter and it protected the A/C evaporator core from getting contaminated with hair, lint, leaves, and other nasty things that could get pulled into the air intake of the A/C system. It also protected the inside of the car from dust and oder. Most of all, the clean air was a benefit to the driver. European cars started using “Cabin Air Filters” first, around the mid 80’s. In the late 90’s I started to see them in high-end Japanese cars, and by the mid 2000’s almost all cars had some type of Air Filter added to the A/C system. The filter works great till, till it looks like the one in the picture. A filter can only do its job if it can catch and hold the dirt. This filter is past its way past its prime. looking at it, you might think it’s very old, but it’s only 3 years old, but the car is only used in town and in 3 years has only driven 7,000 miles.
working on the car.
