Connect your voltmeter neg. Fits gm v 6 engines with thunderbolt iv v hei ignition.
106f3b2 1978 B200 Dodge Van Wiring Diagram Free Picture
Thunderbolt iv wiring diagram. Whtgrn from module to dis. If 12 volts is present remove the coil spark wire from the distributor and connect it to a spark gap tester to ground. Identifying the type of thunderbolt iv module original thunderbolt iv icm this module is mounted on the exhaust elbow and has an aluminum housing. Since we get questions about these systems i though i could relate my findings ala caotharvôçª there is a reason i researched this. Remove the whitegreen lead from the dist. Tests for tb ignition.
When hot the ignition fails completely. It shows the components of the circuit as simplified shapes and the capacity and signal connections between the devices. Lead to the whitered wire terminal at the dist. Lead to the engine ground and pos. L grounding the purple wire does not disable the electronic advance like answered by a verified marine mechanic we use cookies to give you the best possible experience on our website. Thunderbolt iv ignition wiring diagram wiring diagram is a simplified standard pictorial representation of an electrical circuit.
Aug 07 thunderbolt iv mounted on exhaust elbow whtred from module to dis. Wiring diagrams 4f 3 thunderbolt iv with ignition module mounted on. It should read 12 volts. Wanted to replace the mercruiser ignition system with something new. Wignition key on and bilge well ventilated of gas fumes. 4b mcm v 6 cid l with thunderbolt iv on your mercruiser are designed and manufac tured to l lx.
Thunderbolt v ignition wo knock sensor. 4b ignition system wiring diagram. Thunderbolt iv and v ignition systems. Jun 19 need wiring schematic for mercruiser. V6 mercruiser engine thunderbolt iv ignition and forgot how all the wires i have the full seloc manual so i already have these wiring diagram that you. The thunderbolt v has 5 wires two of which go to the distributor one is a wiring diagram.
See application fits and newer mcmmie l l l l mpi engines with ecm fits gm v 6 engines with thunderbolt iv v hei ignition. Adapter harness 15275a1 is no longer available from the manufacturer. After cooling it runs normal. Second generation thunderbolt iv ignition control module this module is mounted on a triangular plate and requires the use of adapter harness 15275a1. My 2452 with a 57l 250 hp 2 bbl carb engine had developed a problem.
Gallery of Thunderbolt Iv Wiring Diagram
