Running wires on 420 - hartop to helm

[SaltyDog]

Will be starting a project and will need to run at least one wire (small diameter - 9/16) from the top of the hardtop to the helm on a 05 420. No problem with the access panel under the hardtop, curious about coming down the arch support and up into the helm area.

Anyone have any tips/tricks/cautions for this one. I have run wires on other boats with arches but not this boat.

Thanks for any input.