Power in factory radio but no power in aftermarket

[Theride 10+ year member]

If anyone could help me, i would really appreciate it as im confused.

I have a 92 accord LX. I am getting no power in the aftermarket radio. However the factory radio plays perfect.

I'd like to add that I am using a wiring harness with the aftermarket radio.

does anyone has any idea as to whats going on?

Could I wire the radio from another location other than the wireing harness?

why would the factory radio play but the aftermarket does not?

BTW, this just started about 2 weeks ago. it played perfectly fine prior.

PLEASE HELP

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[keep_hope_alive Premium Member]

ground the aftermarket radio to a bolt into metal behind the radio.

use a volt meter to check voltage - constant and ignition at the harness.

it may be a bad head unit. have you tested it outside the car?