sir, you are rite it was dangerous and some wires which were hidden inside the covering were melted which caused the melting of 15 amp fuse.
Now i have bought a relay box which comes in indus corrolla. it has 3 relays and one fuse and i have given it to the electrician so that complete new set of wires and work will be done.
both relays will be used as separate for high and low point.
How to calculate the load of both bulbs on the fuse: i.e. 55/60 or 100/90.