Open up the hood at right hand side behind the battery there is electrical fuse box with few relays & high rating coloured fuses. Pull each fuse one by one check in bright light if any of it is blown replace with same rating all OK. Over to the driver side under the dash on right side firewall there is fuse box with slit to pull. Remove the cover and read markings, pull out each one by one and check any blown fuse be replaced with same rating & colour. -
Over the cover fuse rating & assignment is marked clearly. Fuses will not cost more then Rs. 10 or 15 at max.
if all checked & ok now locate an electrician at some battery shop and get fixed. Do not share what you have done keep watching what he does make sure he does NOT do Khu^^T^^na of any wire or connectors if sliced make sure to get it pvc taped.