If the stock fuse and wiring won't handle the higher wattage, you can rewire it to use a relay. The relay circuit must be wired and fused to handle the wattage you'll be running. Guides regarding wire gauge in relation to length and amperage should be around if you search the internet.

__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.