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5278 622AA
7 V8 1977 - 1986 Chevrolet C10 305/5 V8 1977 - 1986 Chevrolet C10 Suburban 305/5 V8 1979 - 1986 GMC C2500 Suburban 350/5
7 V8 1968 - 1974 Mercury Montego 302/5 V8 1971 - 1973 Mercury Monterey 351/5
8 L6 1961 Chevrolet K10 Pickup 261/4
9 L6 1977 - 1993 Ford F-150 351/5
Single Channel Digital Ignition Tester - 8998 awabs 5278 622AAOverview: This Tester will check the operation of all of MSD's single channel CD Ignition Controls. Once the ignition tests good, you can continue troubleshooting and find the culprit. The Tester produces a simulated trigger signal that fires the ignition just as if the engine was running. A special, load producing clip on spark plug is included to connect to the coil wire. If the spark is unable to jump the gap of the tester, there is an ignition
