Hey guys, first post :happy:

I recently installed a Kenwood single DIN head unit myself. I made the mistake of cutting the old harness but re-soldered it back on. I soldered a harness adapter onto the new head unit and plugged it into the stock harness. My car has a trip computer and the blackout cluster. I can only get power to these when the constant power and accessory power wires are both touching each other but this leaves me with constant accessory power through the car. I took the aftermarket head unit out and put the stock one back in with all the cables as if it were stock and still I don't get any power unless I have constant accessory power. Any ideas what causes this? :tired:

Sounds like some of the wiring is cocked up.

What did you do with the earth for the new HU? Factory Head Units earth through their chassis screws and the dash brackets.

Mike

I grounded the new HU through the chassis, yeah thats what I read about the factory ones and i was stumped. No idea what is going on with the wires because I can get constant accessory power but not accessory and constant through different wires. This leads my car to flat batteries and if I dont drive my car within 24 hours, it goes dead :/ If no one knows why this is happening then I will just take it to an auto electrician.
Thanks though :)