I am still in the very early stages of the restoration / rebuild of my 1983 van.
It was converted in the late 80s to a camper van - a very basic minimalistic conversion.
Bench seats across the middle and down the driver's (right) side, with slats to extend into a bed.
Home made curtains and I am not sure what the cushions were from - they have long since disappeared from the van.
(It was stood motionless for 30 years).
Since being blackmailed emotionally into taking on this job by the mother-in-law, I have been updating / upgrading it to later specification engine and electrics.
I have obtained an engine complete with all electrics, plus all the body looms from a similar 1987 vehicle.
My query is simple - at the bulk-head of the van, there are approx. 4 or 5 40mm (ish) diameter holes through which all the looms pass and in which the grommets sit.

Obviously, as mine is a 1883 van, it had the basic torpedo fuse-box, and I confess that at the time, I did not pay much attention to which hole each of the cables came through when I stripped it all out many moons ago.
Does anyone know if there is a specific hole for each loom?
Or can I just use "best-guess" judgement?
I have looked in the Wiki, and I have looked at countless images on google, but the bulkhead is always completely obscured by the spaghetti that emanates from the fuse-boxes.