Door wiring carriers

I have an '88 3dr hatch with no holes/grommets in the door shuts where the wiring would go for elec windows/central locking/speakers to carry wiring from the dash into the doors.
Whats the accepted wisdom on what to use in this situation? I presume I need either the original loom carriers (flexible rubber tube with grommets on each end) or some generic ones or some from another vehicle that are suitable?
I'm keen to add elec windows/central locking/speakers but with no clear wiring path I thought I'd ask advice first.
Thanks in advance.

Standard there are 2 gromets either end and the wires are just taped together inbetween, when you looks you'll see indents where the holes go. Make sure they're staggered or it'll crush when you shut the door.

Any chance of a pic of how yours are? (When you have a minute, not now as its going on 2am :) )

The grommits holes are centre punched about halfway down the door at the hinge side. You need to take the doors off to drill them