It's been a long time since I worked on a C-130, but have some info on the trim tab indicators for an E Model.
According to the TO 1C-130E-4 (an IPB I do believe), there were three trim indicators on the pilot's main
instrument panel: Elevator Trim Tab, Figure 83 - Index 26, P/N 8DJ49GBV2
Aileron Trim Tab, Figure 83 - Index 27, P/N 8DJ49GAW2
Rudder Trim Tab, Figure 83 - Index 28, P/N 8DJ49GAY2
Hope this is some of the info you were looking to find.