We need to put a rev limiter on to a merc thunderbolt ignition box. Its a black box with 4 posts. We have a blown BB that goes wild when it leaves the water so need a soft touch limiter of some description. Thanks

A quote from another member is below, I do not remember who wrote it, but the info is good

MSD#5486
Have to make sure the thing is USCG approved, the MSD#5468 IS. And it is "Intended for engines that do not use a MSD ignition"