The radio amplifier 1373082 i now have three of these all don't work. Two where working and over the years and stopped. The third i got 2nd hand from a car boneyard and it doesn't work. They just must be all old 25 years now and wear out. i pulled one from a 93 940 its smaller in size part number 3533004 and it works fine you just have to drill two holes so that you can relocate the cruise control module onto it. For me the 940 amplifiers are a lot easier to find in Australia.
Hope this info helps someone out.