RWR ARI 18228 Variants
The wiring for the RWR (ARI 18228 /11/12 IIRC) is pretty much standard across all the 18228 variants, so unless you are after the location of the plug breaks, or the fuses, any version should enable you to check the cables etc.
Do you have a particular snag?
(background of all ARI 18228 versions from /1 to /21)