For 4 Cyl. Models W/ 12 Volt Negative Ground Systems Or 6 Volt Systems Converted To 12 Volt Negative Ground Systems Only. Dim A (1): Never Change Points Again. Dim B (2): Easy Installation No Complicated Wiring Fits Entirely Inside Distributor. Dim C (3): Increases Spark Plug Life Horsepower Improves Fuel Economy. Dim D (4): Precision Engineered Solid State Electronics. Dim E (5): For Prestolite Distributor Part #'S: 107573C91 121689C1 534496R91 404967R91 Dim F (6): For Prestolite Distr. #'S: Ibt4702 4405 4707 4705 4105 4403A 4404 4404A 4402 6003 4102A; Case-Ih Industrial/Construction 480Ck (W/ Prestolite # Ibt4403A 4404 4404A 4 580Ck (W/ Prestolite # Ibt4403A 4404 4404A 4 680Ck (W/ Prestolite Dist.) 840 (W/ Prestolite Dist.)
