alanzetta22
New member
Greetings, I recently became the owner of a 4HP Mercury that does not start. After a thorough restoring of the the carb and fuel pump. I have basically tracked my no start to a faulty ignition putting out weak spark. After much research I find out that the points on this motor are probably the root cause of the weak spark. Replacing the points and condenser on it is currently outside of my budget so after some more research I found an Electronic ignition module which can replace a point/condenser system on old two strokes and by reading the reviews many say that it makes your engine run even better! Therefore I ordered the module off of Amazon, and I am attempting to convert my 4hp Mercury, however, I am having trouble understanding how exactly it needs to be wired.
The module I purchased
Universal Ignition Module
The instructions
Unfortunately, I've ran into a hurdle understanding exactly how to wire it since I am being confused by the lack of information from the instructions . The Mercury coil has two leads, + and -. Then there is the output wire which is connected to the spark plug... Now, what I inferred from these instructions is that the module must be grounded to itself and the module itself is mounted on the chassis (I mounted it on the cylinder cover) to also ground itself, however, It is unclear how exactly it's obtains the signal and power to ignite the coil.
Its not possible that the ground lead of the module is simply grounded and the positive is connected to the positive of the coil. But that is how the instructions are drawn....
After more consideration, I decided to disassemble to engine, taking out the flywheel to analyze the ignition.
I borrowed this picture from another thread i found here, but it looks exactly like this.
I realize that I am now stuck because I don't really have a clear idea of how the ignition module works and also the ignition coil (-) is actually wired to the condenser, and the (+) is the main lead that goes to the breaker.
no pun intended, but, any pointers?
The module I purchased
Universal Ignition Module
The instructions
Unfortunately, I've ran into a hurdle understanding exactly how to wire it since I am being confused by the lack of information from the instructions . The Mercury coil has two leads, + and -. Then there is the output wire which is connected to the spark plug... Now, what I inferred from these instructions is that the module must be grounded to itself and the module itself is mounted on the chassis (I mounted it on the cylinder cover) to also ground itself, however, It is unclear how exactly it's obtains the signal and power to ignite the coil.
Its not possible that the ground lead of the module is simply grounded and the positive is connected to the positive of the coil. But that is how the instructions are drawn....
After more consideration, I decided to disassemble to engine, taking out the flywheel to analyze the ignition.
I borrowed this picture from another thread i found here, but it looks exactly like this.
I realize that I am now stuck because I don't really have a clear idea of how the ignition module works and also the ignition coil (-) is actually wired to the condenser, and the (+) is the main lead that goes to the breaker.
no pun intended, but, any pointers?