Routing for water valve cable on 64 f100

[64fordf100292v8]

Does anybody have a picture of where the factory heater water valve cable comes out through the firewall? I couldn't figure out which hole it went through once I started putting my truck back together so I left it out for now. Any help would be greatly appreciated.

[ken462]

None of my photos show exactly where the cable comes out of the firewall but it is right under the battery tray

[64fordf100292v8]

Ok I'll look in that area,thanks.

[f100jim]

A 65 has a small dimple on the firewall where you drill. A 64 might also.