I used the motor cycle bulbs for my 1993 Civic over the H4 standards. The wattage was increased from 50/65 to 80/100. You will need to increase the wire and connector boot. The higher amperage draw with the brights on will slowly melt it. The bulb was an excat oem size. I picked up new repalcement connectors, and two relays. I put it in for under $40.