Bengaluru is electrified in all routes (except Hosur route) and gets WAP-7 from RPM or LGD from some trains. Even it has KJM/WAP-7. So they can send those WAP-7 with passenger trains passing/from Bengaluru. But this is not that case here. Ballari is electrified only towards Guntakal end. So these trains get some WAG links as freight locos are more in this region. 11303/11304 - Manuguru - SCSMT Kolhapur - Manuguru Express gets WAG locos from Manuguru to Guntakal