Quote:
Originally Posted by killerb
I have a 2013 Bose Non-Nav
I got a new Head Unit (pumpkin) 7"
I purchased a metra 70-7553. The head unit doesn't power up.. i can put the old system back in and it works.
I read some posts about the pin layout changing on a 2013. Not sure if that true with the 7553.
Any ideas on what could cause this?
could a bad ground cause this?
Brian
Brand new Z owner
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Have you got a DMM? Check your power wire to make sure you're getting power to the new unit. I'm not sure how you have it wired up, so it's almost impossible to tell. A LACK of ground might cause it not to power up, but a poor ground... eh...
Take your new unit, tie the +12V and ignition wire to your battery's positive and ground the negative and see if you get it to power on. You don't need anything else actually hooked up for it to power up - as far as I know, I don't know what a pumpkin is, unless it's some oddball unit. <edit> Ok, I looked into this and figured it out, one of those Android units. That's ok, shouldn't change much. </e>
But what you're describing to me makes me wonder if you didn't get a bad unit.
If you are right and the 13+ units have a different wiring scheme, then you just tap into a continuous power and a switched (accessory or ignition) power. Hooking it up directly to the battery (with a fuse, of course) will simulate this.