isn't this your setup? looks complete to me. http://www.fisherconsoles.com/service manuals/FISHER FUTURA IV SM.pdfI downloaded the Ambassador service manual but have not compared the schematic pages to the Futura's as it looks like the Futura's are cut off a little so between the two hopefully I have complete coverage. I don't know which other one I looked at but it too had the misprint without the voltages for that one can cap on the tuner/preamp.
it doesn't have those voltage values, though. refer to @larryderouin's post above re the ambassador.
and I'm ready to get it all back together. He said the fuse was blown and he only had a 4A slo-blo to test it (it specs a 3.2A slo-blo) and one of the tuner light bulbs was out and since I sourced the caps he thought I'd rather just find these myself. Hahaha, what a pain in the butt it has been to find these two parts! I finally found both on Amazon (not by searching on Amazon) after searching all over God's green earth for them and the bulbs are actually coming from France. The fuse wasn't really that hard to find but trying to get a decent deal was. A five pack of of Bussman fuses is $9.13 including shipping. The festoon style bulbs are an old European size; 6mm x 36mm, 6V, 3W. Two of these are $7.50 including shipping.