in the gauge clusternext to speedometer, blue is hi beam, amber is oil pressure.. on the flat steel pannel next to it. red is alternator and igniton. sometimes there is a green light used as ignition or choke.
in the cluster the hi beam will vary from location as it may be built into the speedo and not the gauge pod.
the actual location of pannel mounted lights will vary as well due to them not being standard, as far as I have learned they were intalled at dealer as customer requested.
turn signal wil be installed on the handle it may be green it may be red must of that stuff was not really standard, but rather 10 yrs post ww2 so they got whatever was available.
double check on other forums just to be 100%. as my findings are from customers trucks and not from actual literature.