12v Backup Supply to Radio - help!

[JamesK-insight]

Hello,

I've just fitted a new stereo to my Insight and it works well, except it looses its settings every time I turn the key off!

I assume I'm missing the 12v backup feed to retain the memory (I just bought a plug and prey connects2 harness - everything else works perfectly) - is there a fuse a need to check? Do I need to run a separate feed from the little 12v battery?

Anyone else hit a similar issue when going aftermarket?

Any help would be much appreciated!

[JamesK-insight]

Looks like Want to convert 12v pwr outlet to always on maybe an option!

[Cobb]

Sounds like the yellow wire isnt hooked up or is it red? One wire is always hot, the other is only hot when the key is in accessory or on.

Are wire colors international or do they switch for US vs non US models?

[JamesK-insight]

Thanks Cobb - I finally surrendered and went to chat with my local car radio store... they were very helpful... it looks like it's a known thing on the plug and play harness I bought.... the car and fuses are all fine.

The harness is setup as default to not supply a perm 12v feed, just the switched feed from the ignition. Looks like a simple fix (for them) so they are going to sort it for me.

Merry Christmas!!

[Cobb]

The Install Doctor - Radio Wire Harness and Colors - Honda Acura

Red is to power the radio with the key on.

Yellow is always hot from the battery to keep memory.

[JamesK-insight]

Thanks Cobb!

[Cobb]

You know, Ive forgot what we were installing, so how did it turn out?

[egads]

The Metra harnesses I have bought in the past came with wire IDs. I guess the "connects to" can now be listed by us as "not recommended" The car radio store probably just used a tap to get the yellow always on wire. I think JamesK was putting in a double din nav unit.

[JamesK-insight]

Still in progress... I fitted a Pioneer AppRadio... looks great, but the backup feed is still a bit weird... the feed is live on the correct wire (so the audio store tell me), but when the car starts, this drops to about 11v which (so I'm told by shop that have spoken with pioneer support directly) trips the memory of the head unit.

Interestingly, they think it maybe an issue with the lovely 12v battery under the hood... even after a 3 hr drive it indicates that it needs charging... I replaced the 12v battery with a replacement only 15 months (16000 miles) ago.

A bit stumped... going to get Honda to check the battery since it's still under warranty... if that's fine then I don't really know what to do next.

Separate 12v power source for the radio backup maybe?

[Cobb]

Could be it just needs a new battery. I think I am in the same boat.


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