The number on top of the fuse is the amount of amps it can handle before it blows. In your areal there are probably lots of stereo shops. I would go to one of them and tell them you want a fuse tap. I think that is what that little piece of metal is called that goes onto the foot of the fuse. If you get lucky you might even find a nice guy at one of them that can help you find the fuse that is hot with the key on. Those things that splice wires are really not very good and will corrode over time and then you will lose power to your device. The fuse tap is the best way to go.

 

Ok so can I tap and existing fuse that is in use, or should I use an ununsed slot with a new fuse?

 

Ok I got some fuse taps and extra fuses. If I wanna use M8 ( the heated seat fuse) what amp fuse do I need to put in there?

 

you would use whatever size the device your installing calls for, if it just for a relay control probably just 5 amps, if it is carrying a load it might need to be 15 or 20

 

It's just power for the wireless reciever that gets the signal from the remote control to turn on the lights. All the instructions say is tap it to a switched 12V power source.

 

I would just use a 5 amp fuse then. Have a good one.

 

Cool. Thanks for all the help. Any harm if I do use a higher fuse?

 

The fuse is designed to blow if there is a short circuit so the wires don't get hot enough to start a fire or melt things together. If the wires are not very thick you don't want to go over 10 amps.

 

Ok thanks.

 

Got them working and they are great! Thanks everyone again for the help!