12 Volt Travel Knowledge Base

The most commonly used and widely know type of FM Modulator is the type that plugs into the cigarette lighter socket. The second type are those that are built into some MP3 players. Both of these methods share the same problem; they sit near your vehicle stereo and broadcast on a frequency that is hopefully not being used in the area. While these types of FM Modulators work well sometimes, other times they can be problematic and frustrating.

The Best FM Modulators require installation in the vehicle. The installation process is pretty simple and the outcome is very effective. These FM Modulators are installed “In-Line” with the vehicles AM/FM antenna. (more…)

Oftentimes when installing new speakers in a vehicle it’s not clear which wire is positive and which is negative. It is important to figure this out before connecting your new speakers to the vehicle.

To determine which wire is positive and which is negative we will use a method commonly referred to as a “Pop Test”. The “Pop Test” uses one of your speakers and a 1.3V battery. This can be from “AAA” to “D” cell. (more…)

Engine noise in the vehicles stereo speakers. It’s a pretty common problem when an aftermarket radio or amplifier is installed. The most common description of the noise is a whining sound that gets louder as the engines RPMs increase. This is very annoying and sometimes embarrassing. If your new automotive stereo system is causing unwanted engine noise the fix can be relatively simple.

The normal cause of engine noise in the stereo system is the ground. In any 12 volt system (more…)