Worth mentioning that since the introduction of the schematic style wiring diagrams round about 2006 the loom distances are quoted in mm between each split, bombtail, termination etc. It's relatively easy therefore to measure from an adjacent feature to find what your looking for.
An example is in Rog's post
here. The CAN low bombtail is 75mm from the chassis to engine loom connector C48, CAN high a further 60mm.
