Head Unit Install Help - Losing Presets

[thegamer36]

I am looking for a little help on a problem I am having with a head unit that I installed. What is happening is that when I start the car the head unit resets and losses all my radio station presets. It does not happen every time but it will happen if I let it sit over night most of the time. I checked and rechecked all the red and yellow line connections and everything seems to be fine. Any suggestions would be appreciated.

Thanks.

[spnkdrm]

Whats the head unit model?

What year is your car?

Do you have a BOV?

[thegamer36]

Head Unit - Boss Audio 648bi
2004 Subaru WRX Wagon

What is BOV?

Thanks.

[20WRX04]

I'm not much help on the wiring situation. If it was in front of me, that'd be a different story. As far as BOV, it means Blow Off Valve. Check this thread out. It will help A LOT. BTW, welcome to the club.

What does it mean?? Terminology and Acronyms for the newcomer!

[EJ257]

What is BOV?

BOV = blow-off valve

[thegamer36]

I do not have a BOV.

I am using a wiring harness and checked the yellow to yellow (constant 12v) and red to red connections and they seem fine. I am being told by others that I need the yellow wire to connect to a constant 12v. Apparently the yellow wire I am connecting to does not work. (The yellow from the harness to the yellow wire from the radio). So which wire in the mess of wires behind the radio will give me a constant 12v? Also, how come the factory radio works fine?

Thanks again.

[20WRX04]

I do not have a BOV.

Yes, actually you do. It's attached to the right front side of your intercooler.

[thegamer36]

OK I do have a BOV!!! LOL, if I only knew what it was used for.

Some more information about my issue. When I start the car I notice that the clock and the radio both go off for a second and turn back on. The clock does not reset, but the radio does.

[spnkdrm]

I used to be real into car audio and have had some experience with boss stuff.

First off, does everything else seem to work ok on it? Reception, CD, USB, everything other than the stuff resetting?

Also, it wouldn't hurt to go to a local car audio shop and have them bench test it real quick to make sure everything else checks out.

As far as which is the constant 12v, I don't remember, but I am sure there are some diagrams floating around here.

[ahendrickson]

You would know if you had a BOV. it makes a WHOSHHHH sound when you let off the throttle. Chances are if you do not know if you have one, then you dont. On stock cars, a BPV is standard. BPV recirculate the air from the turbo into the exhaust