I'm a very beginner for DIYing. So plz excuse my ignorance.

1. Do I need any diodes or relay to install remote car starter with push button?

2. What does '+', '-' after wire color means? Is there any difference to do?

3. I heard that there's shortage power to remote start. So someone says that there needs some treatment to amplify voltage. Is it right?


Please reply me.
Thank you very much for your attention in advance.

 

"2. What does '+', '-' after wire color means? Is there any difference to do?"

Frankly, (as a professional electro-mechanical guy) this question shows you will need a person to guide you while you do this.
Find a friend with experience to help you with your car or pay somebody to install it.
You can learn this stuff eventually, but you should start with something easier.

 

The + is the plus side of wire, it carries the voltage. You never want to hit a + wire to a ground. The - is the negative side of the wire, technically the ground. Please do not mess around if you are unsure, it can cause a lot of damage.