The International Turn Signal Switch is a reliable and practical replacement for the OEM# 1663595C91. Designed for most International truck applications, this 12V standard switch features a 6 wire harness and a 10 bulb capacity for hazard warning, with 5 bulbs per side for turn signal flashing. With its direct replacement capability, this switch offers convenience and ease of use. Sold individually, this International Turn Signal Switch is a dependable choice for ensuring proper signaling and safety on the road.