- This topic has 5 replies, 3 voices, and was last updated 5 years ago by
.
-
There are two ground straps that are supposed to connect the lower cowl to the engine block. If those are not there and you have stray spark plug voltage leaking, that’s one way to get shocked. Another is if you have an engine with ADI (Alternator-Driven Ignition) or a CDI distributor system, you have a couple of hundred volts in the key switch, waiting to be grounded out when you turn off the key. If you have a bad key switch, a lot of corrosion in the box, or wires with bad insulation (very common in that era of Mercury) you will get zapped from the box. Both of these scenarios can explain the engine misfire, as well.
Long live American manufacturing!
For 1976 model year wiring, it seems strange that he cut the tach wire and, I am assuming, he also stopped the cylinder misfire? There is seemingly no connection between the two, unless somewhere in the box or harness, there was a short between the stop circuit and the tach circuit. I am pretty sure that year had an alternator driven (common type) tach and not an ignition-driven one. I gotta go look at a diagram, now….
Now if, like many Merc owners, his engine is about ten years older than he thinks, that’s a different story.
Long live American manufacturing!
- You must be logged in to reply to this topic.
