stereo not turning on

i wired up my stero and its not turning on and there is a blue wire that is labled relay and i was wondering if that was the problem. also if it is the problem then how can i fix itjohn

Hey you have to give alot more info about the equipment in question

csnut18 wrote: Hey you have to give alot more info about the equipment in question

Yes you are correct! More info

well i thought i had it all wired up but it wont turn on so i looked at it more closely and there was a third wire that says relay control and i was wounding what i should hook it up to also if it was the problem?john

You need to give us more info, headunit brand and model #, plus the car you are putting it in, make and year before we can help you

You need to give us some more info on the vehicle and equipment your trying to/have installed. Did you use a aftermarket harness, or did you hardwire it? if so did you double check your connections with a digital multimeter? Was the previously installed radio working? Have you checked the fuses? The only connections required for power on aftermarket radios are yellow(12v constant)red(12v switched/accessory)and black(ground)..the blue wire your talking about is usually used for either 12v amp turn on or 12v power antenna output sSrtfm