Amp-on wire for stock radio?

[creyc 10+ year member]

First, the forum Search button is NOT working, it sits there for 5 minutes doing nothing then times out.

Anyways I need a way to turn my amp on from my brothers stock o5' GM Silverado pickup truck.

I think the cigarette lighter might be switched with the ignition, but is there some obvious place I should tie into to get switched 12v?

Click to read more...

 

[low_end 10+ year member]

You can just tap off of the fuse box. The radio fuse usually only has power when the key is turned. Just go in with a dmm or test light and see what fuse only has power when the ignition is on. But, like i said the radio fuse is the best bet. That is the one you want to tap off of. In line fuse is always a good idea as well(after youve tapped your source).