Mercruiser 57 thunderbolt ignition wiring diagram. The above depicted ignition system does not have a timing module or knock sensor. Adapter harness 15275a1 is no longer available from the manufacturer. Thunderbolt v was an improvement on an already exceptionally reliable and well performing system. Brown in mercruiser category on nov 12 you can also find other images like wiring diagram parts diagram replacement parts electrical diagram repair manuals engine diagram engine scheme wiringmercruiser thunderbolt iv no power to coil page.
A wiring diagram isnt going to help much if you have an ignition problem. Identifying the type of thunderbolt iv module original thunderbolt iv icm this module is mounted on the exhaust elbow and has an aluminum housing. Buy a genuine mercury quicksilver or aftermarket part. Mercury outboard wiring harness diagram download.
Mercruiser starter wiring diagram trusted wiring diagram mercruiser 5 7 engine diagram smart wiring diagrams u bayliner capri wiring diagram. Below is the wiring diagram but if you stated what the problem is maybe you could get some further help. When i disable the knock sensor and run the boat the difference in performance is very noticeable. Mercruiser ignition wiring diagram collections of mercruiser 5 7 wiring diagram collection.
Mercruiser 57 wiring diagram. Here is the youtube location to where the system is being offered for sale. Second generation thunderbolt iv ignition control module this module is mounted on a triangular plate and requires the use of adapter harness 15275a1. V gm v 8 wiring harnesselectricalthunderbolt v ignition parts.
When the system is operating the engine runs well. 1991 57 mercruiser engine wiring diagram. The tb iv system was used until the introduction of tb v mid way through 1996. Buy a genuine mercury quicksilver or aftermarket part.
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Wiring diagram for outboard ignition switch refrence boat leisure. This is a complete working ignition system that was removed from a gm v 8 engine with the thunderbolt 4 ignition system. Mercruiser thunderbolt ignition wiring diagram this is images about mercruiser thunderbolt ignition wiring diagram posted by peggy g. 1 iboats.