Trying to run a wire down the A-pillar - Help!

[JJorgensen52]

I'm trying to run the power / ground wire for cab lights down the driver's A-pillar in my new truck.

Somewhere on here, I read that not all the trucks have a hole at the top of the pillar - is this true?

I've tried using a fish tape to feed down through the sun visor hole, and also up from the wire-hole underneath the dash. No luck going down at all, and I can feed the fish up the pillar until it gets to where the pillar meets the roof, and it just hangs up.

I spent a good 1.5 hours trying this today, can anyone confirm if I'm wasting my time?