were you using 100W bulbs in your car?
its best to install a relay for your driving lights and also install additional relays on the original mehran fuse box inside (it has 4 mounting slots for bosch type relays) for circuit cut off on cranking and one for the horn - switch ground though it - this way you wont burn out the contact in the steering wheel. Pass all current through the system with ignition key on - that way your headlamps wont remain on once you switch off your cars engine.
p.s. instead of installing relays in the engine room you can use the cars original wiring and install the relays under the dash to keep everything neat and tidy and factory looking too (you would need to find a hard working and honest person to do it for you - or you can try to do it yourself)