Rep Power: 0

So i have a 2005 civic base model and just recently i tried to install a aftermarket pioneer deh-150mp radio car reciver for a sake of an aux input. Now i got the stock radio taken out and plugged in the pioneer with a harness adaptor but however when i turned on the car, not crank, the pioneer would not turn on. So i reinstalled the stock radio car reciever and that would turn on as well. I also noticed that the needles to the odometer are shaking when i start the car so i fear that the battery is some how drained. Last time it was replaced was november. Any thoughts?

 
Rep Power: 210

check fuses?

any time you mess around with any wiring/electrical you should be disconnecting your battery first, is it safe to assume you did not?

 
Rep Power: 518

Sounds like at the very least, the backup fuse got blown.



Hopefully before your gauge cluster gets ruined, make sure the wires labeled ILLUMINATION are not connected to anything and taped off so they can't short out.

 
Rep Power: 0

Oh dnag thats where we screwed up. I know noob move. So would disconnecting and reconnecting the battery do the trick?

 
Rep Power: 518

No, the damage is already done.

Find the blown fuse(s) and replace.