There's a RENAULT Midlum Electrical Service Manual PDF above the page.
Midlum, which dates back to the mid-seventies, when four European manufacturers - Saviem, DAF, Magirus-Deutz and Volvo, joined forces to create a common model of a medium-sized truck, conquered not only Europe but also America.
Outwardly, Midlum looks very much like his older brother Renault Premium Distribution for the simple reason that he borrowed a cab from him.
Only it is 200 mm narrower, and the design of the front end is slightly different. But, both that and another are produced at the same factory in Blainville (Normandy). By the way, Premium shared the cab not only with Midlum.
Its cabs are installed on the Finnish Sisu and Renault Kerax off-road trucks, and apparently by the end of the year, deliveries of Midlum cabs to the UK will begin, where they assemble small DAF 45/55 series.