1974 Evinrude 70 HP Charging system install

[SHSU]

Howdy All,
I have a 1974 70 HP Evinrude (70442M). Works great but looking to add the ability to charge batteries while under way. I see that I can purchase a kit that comes with a new stator, rectifier, and voltage regulator. Only issue I have is I don't know how to install it. Stator/Rectifier I think is straight forward, the voltage regulator though I am unsure of placement or wiring. My Evinrude Manual doesn't show/provide any guidance on the charge system option since its aftermarket.

Any pictures showing currently working/installed system would be appreciated or a manual/installation guide would be awesome.

Thanks in advance

SHSU

 

[racerone]

They all left the factory with the battery charging system.----Have you done any testing to see if anything is wrong with yours ??

 

[saltchuckmatt]

Pictures of the motor with the cowling off will help immensely.

 

[Crosbyman]

your engine should have 2 yellow wires connected to this rectifier which will charge your battery !! ...usually wired back to the main incoming B+ post on the solenoid (see the fat red cable another one to a fuse) .

 

[SHSU]

Thanks all
I was under the impression it was an aftermarket mod because of the voltage regulator. I will have to test it when I pull the boat out again. Any reason why the kit has a voltage regulator (581307) vs what is already common on the engine?

Thanks,

SHSU

 

[Crosbyman]

rectifier/regulaors are fine for stabelizing the volts to protect electronics but a simple full wave rectifier will use the battery as a kind of buffer.

if you do get high volts messing up electronics you could get a rectifier- regulator and mount it somewhere . ( lots of them on Amazon or go OEM $$$)

https://www.amazon.ca/Aramox-Rectifier-19711975-Regulator-Evinrude/dp/B0BYSLWZ45/ref=sr_1_19?crid=2YRTZLID84FDW&dib=eyJ2IjoiMSJ9.MwR9GIgh2PZvTE7eaP3sPVZoJ7F4Mipg7uQBi-XrHpnxefHzm6gxEU0e9LAfE8fodYYL_k7FauPoJpLmUb93AOrOZbnHdyyF-8wvXuo44i49MBBXjZtDxNR_Z2_vDTtftFpVt90ey1Ed3WV2ZhIcY-XXFsKuGfRxFTdRlYZJG1vMjBLByPmexPWvd9u_AGYFUuniaBYZLGlKEoFQYAzzPj_-4FVZZz0AUKBagL3VCJRIuTcq-kHemyTczkgLzXXHTYfcC4c8VnXoASd3vLGxgYV4mqIZ7unt2VOSPtRtAck.quPaShpDZgxDM6pdFc1G-O8Hp5tRhW8UQr7R1ZSp3UE&dib_tag=se&keywords=marine+voltage+regulators&qid=1733239176&sprefix=marine+voltage+reculators%2Caps%2C157&sr=8-19