A tool for installing cables in a split sleeve includes first and second guide portions, a third arcuate guide portion extending from and positioned radially outward of the first guide portion, the first and third guide portions forming a first guide slot therebetween, and a fourth arcuate guide portion extending from and positioned radially outward of the second guide portion, the second and fourth guide portions forming a second guide slot therebetween. The tool may be assembled to a split sleeve that is biased toward a rolled up configuration in which one side of the split sleeve at least partially overlies another side of the split sleeve. By positioning one or more cables within the tool while the tool is assembled to the split sleeve, a user may slide the tool along the split sleeve to position the cables within the split sleeve.