hey everyone i bought a new system for my gf car and i hooked it up but there is no rem wire on the radio or the hook ups or anything and the amp is not working at all the hot wire is hooked to the battery and the ground wire is bolted down but without the rem wire the amp is not turning on wat should i do the amp has a hook up for the rem wire but the sterio and conecters to the sterio do not have a rem wire
There should be a blue wire coming out of the back of the HU. That is your remote wire.
If it is not there, you'll have to run one from the amp to the fuse box and put it in a spare fuse spot that is wired. The fuse box is activated by the ignition switch, so there will be no signal unless the ignition is turned. In this situation, the amp will not be turned on my the HU, but the ignition switch instead.
I would install into the fuse box because it is one less connection that needs to made behind the HU; not to mention that it is more accessible in some situations. BTW, that "red +12v wire" runs to the same fuse box....