I'm trying to wire a aftermarket stereo in my 89 celebrity. It sits in my glovebox. I wired the power to my 10v radio fuse, and the clock power wire to my car lighter 20v fuse. I did not attach the antenna or speakers but did ground it, tried getting power to no avail. Any advise on why head unit wont power? or if the antenna needs to be plugged in to act as a second ground of sorts. any advise is welcome. Just bought this brand new and not sure if I need to return it

Verify you have power coming in on both power wires. It should power up.

Like Mike says, take a test light, and attach it between the 10a fuse lead and your ground lead, and then attach it between the 20a lead and the ground lead........it should light with the 20a lead.....may have to have the key on for the 10a lead.....

If it doesn't light on either, chances are your ground lead is bad.....

If it does light on both, may have a bad radio....