IMPORTANT:
this modification will be part of the official A-4E-C 1.03 version.
so this mod will not be developed further or maintained.
Even if its not 100% clear if or what kind of RWR the A4 has, I made a small mod for it, adding a 'RadarLock Warning' and 'RadarMissile Warning' sounds to it.
Since there are no switches in the Cockpit, the system works as soon as the DC-Bus has power.
The sounds are also from the Original A4-Mod(obst for the Lock and RadarAltWarning for the Launch)
to install replace 2 files(devices/device_init) in the '\A-4E-C\Cockpit\Scripts\' folder and place the rwr.lua in the 'Systems' subdirectory
Download Link:
https://drive.google.com/open?id=1erwDOnJ1wioxlKkh8gt0S9ZQoUxvlqis