How to modify the car audio player power wire so that always ON?

[terenkleon]

How do you correctly inflate car tires?

The recommended psi for my car tires is 30. But i realize that its hard to achieve it because i initially take the pressure with a guage, then add some air, then let out some air, then take the pressure again. Is there anyway to inflate to the correct pressure without all the hassle? And will a higher psi lead to better fuel economy?

 

[moparleo]

What do you mean by room power socket? Is this in a building and you want to use a 12V car radio? The wall socket would be 110V. You would need a power converter to run a 12v item on 110v power source.

 

[challenger6pak]

Probably both. In the vehicle the yellow is normally a constant power source to run the clock and memory for station favorites. The red is switched with the key. This is not for sure without knowing what radio you have. It is generally correct. Try the red by itself first. I have seen the yellow being a power out lead to connect to amps to signal them to turn on with the radio. Once you power up the red wire check the yellow with a tester to see if it has power out or not.

 

[moparleo]

I would also put a fuse in the hot wire so you don't fry the electronics if you hook something up wrong.