I tore an old alarm out of my car and now I dont have any voltage on the memory wire for the radio. When the car is off there is like .4v on it and when the car is running there is like 4v. I trace the wire to the fuse box. It isnt shorted to ground and all my fuses are good. BTW the car is a 93 civic. Maybe i am missing something obvious. can anyone shed some light on this for me. thanks
Re: No voltage on 12v constant wire (HatchAttack242)
I think that is what I will end up doing. But I am gonna run a wire from the battery to a fuse box that I am gonna add to power the radio, power locks and alarm. It just bothers me know that that wire isnt working and i cant find out why
I had the same problem in my 97 integra. No power to the constant radio wire so I ran my own from the battery. Turns out there is a fuse called "Backup" in the fuse box under the hood. Doesn't say anything about radio on the fuse chart.
My drinking team has a racing problem.
you all have the same problem it is the brown 7.5 amp fuse UNDER the hood that says back up replace that fuse and all your 12v will return to that wire
Doh! I was just about to came back to this post and say that. I forgot to mention I've seen that happen a few times. The fuse blows, but not completely, so your voltage drops. I've seen an inline for an amp drop from 12 to .3v
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