Haldex Brake Systems has developed a series of four wall charts describing installation procedures for trailer antilock braking systems (ABS). The series includes charts for 2S/1M, 2S/2M, 4S/2M, and 3M ABS systems. Individual charts are being made available to fleets and other installation facilities. To request charts, access www.haldexbrake.com or contact Haldex, 10930 N Pomona Ave, Kansas City MO 64153-1297.