1978 70hp johnson short

[swingline327]

just fired up the old johnson, got it running ok but it doesn't shut off with the key. it also shocks the crap outta me like i was holding on to a coil wire if i touch the boat and block.

i was hoping someone has had a similar problem or a link to wiring diagrams.

anything that might help will be appreciated.

 

[Joe Reeves]

Re: 1978 70hp johnson short

You've got an open ground somewhere. The kill circuit is:

Black wire from powerhead to powerpack, black/yellow wire to raised "M" terminal of ignition switch, black wire from other regular "M" terminal of ignition switch to ground.

 

[swingline327]

Re: 1978 70hp johnson short

there is some corrosion on the grounds but all seem to test fine, is there one that might be the most likely

maybe the coil grounds?

 

[Joe Reeves]

Re: 1978 70hp johnson short

Did you remove and clean those connections, then retighten?

Does your engine now shut off with the key?

 

[swingline327]

Re: 1978 70hp johnson short

won't get around to that until tomorrow, but i'll clean all the corrosion, i think

it got wet with saltwater at the end of last season

 

[swingline327]

Re: 1978 70hp johnson short

do you think a plug wire arcing to the block could cause me to get shocked, or is that related to a bad ground