I have a 98 3.0 with bose, and I was replacing the stock receiver with an Alpine CDA-9856 tonight. The first couple times I turned it on, it was working fine (although I hooked up the blue wire (power antenna lead) from the head unit to the blue wire of the adaptor harness instead of the blue-white wire, but I fixed that).

However later on, the head unit stopped turning on and it seemed like it was getting no power at all. I checked all the wires and they were connected correctly. I also plugged the stock unit back in and the alarm light lit up like normal. The fuse isn't blown. Does anyone know what might be the cause of the problem? I think in the beginning, I forgot to plug the antenna jack into the unit, could that have anything to do with it?

 

Did you check your ground. It could be bad or not making a clean connection.

 

I fixed it, it was a blown fuse after all (I don't know how I missed it ). Thanks though.