rectifier lead assembly 1978 johnson 70 hp ?

moored3

Cadet
Joined
Nov 17, 2007
Messages
24
I was cheching the wiring on the motor 78 johnson 70hp and found the red wire on the rectifier completely burned into . Just what function does th e rectifier serve. the motor still ran just could not get it to idle.
 

ezeke

Supreme Mariner
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Sep 19, 2003
Messages
12,532
Re: rectifier lead assembly 1978 johnson 70 hp ?

The rectifier converts the AC current into direct current for charging the battery. It is good practice to replace the rectifier when damaged in any way. The rectifier is a system of diodes that allow voltage to run in only one direction.

If the diodes are damaged, the battery voltage can reach the ignition system and destroy the components.
 

moored3

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Joined
Nov 17, 2007
Messages
24
Re: rectifier lead assembly 1978 johnson 70 hp ?

Thanks, can this effect the way the engine rus in anyway
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: rectifier lead assembly 1978 johnson 70 hp ?

Yes. If you don't replace it, map the connections and disconnect it from the terminal block.
 
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