Wiring access

[AcidRich]

Is there an obvious route to run a wires from the battery to the engine bay?

I want to fit a very loud secondary horn and it pulls nine amps so needs a relay and a direct 12v from the battery etc

Cheers
Rich

[AcidRich]

Cheers, didn't think of the alternator....... any suggestions on the best place to pick up the 12v for the switched side?