Where do I run wires to dash 97 Camry

[super6logan]

I'm trying to install an additional car horn in my 97 Camry LE and I need to add another button to the dash. I'm trying to figure out the best place the run the wire so I don't have to drill any holes. Does anyone know where the factory wires go to get from the engine to the dash?

[frojoe]

usually on the drivers side, the hole through the firewall will be up on the left, right above where a clutch would be. follow some of the wires from the battery back to that area and you can see where it will be. on my 93 camry I had to remove the inside of the wheel well to get to it and fish wires through

[Jigg007]

I'm sure the 96-97 avalon is very similar, there should also be a hole, atleast plugged with a rubber grommet above the brake pedal. Also there is an opening in the firewall for the engine control wires to run to the computer that you can use.