Mercury inline six wiring diagram?

DirtyOldBoat

Petty Officer 2nd Class
Joined
Jul 16, 2011
Messages
120
I have a 1974 150 inline six mercury outboard and I need to "hot wire" it to get it started due to bad wiring in the boat. I need to know more about the wires coming out of the switchbox. From top to bottom, the first one goes to the coil, and the third one is positive, what are the other two? I think they run to the front of the boat where the key is, do they just need to be crossed for the motor to run?

If anybody knows where I could find a complete wiring diagram I would love it, my shop manual got destroyed. :rolleyes:
 

GT1000000

Rear Admiral
Joined
Jul 13, 2011
Messages
4,916
Re: Mercury inline six wiring diagram?

Hello DirtyOldBoat,
Found a link to online, downloadable manuals... www.repairmanuals4u.com

I forgot where on this site, I found the link, but it was posted here in iboat.com, and led to a free download of the manual... if I find it agan, I will give it to you.
I downloaded it on Adobe PDF file.

Also SELOC manuals has a Mercury Outboards Manual #1408, that covers 1965-1989, 90-300HP, Inline 6 and V-6, 2-Stroke Models. I got mine through Amazon.com for about 23.00 dollars. It has all of the wiring diagrams in the appendix.

Best Regards,gt
 

GT1000000

Rear Admiral
Joined
Jul 13, 2011
Messages
4,916
Re: Mercury inline six wiring diagram?

DOB, Look at the second Sticky post, at the beginning of this forum... "FAQ for Mercury/Mariner Outboards"... that is where the link to the manual is at... ;)
 

carholme

Rear Admiral
Joined
Sep 4, 2010
Messages
4,845
Re: Mercury inline six wiring diagram?

Without a s/n of your engine it is hard to guarantee the year but here are two diagrams you can check:

Merc 1150-1350-1400-1500 Thunderbolt.....Ignition & External Wiring Diagram

Merc Model 900-1150-1500........1976-78 Wiring Diagram

http://www.maxrules.com/mercwireindex.html

Gerry
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: Mercury inline six wiring diagram?

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DirtyOldBoat

Petty Officer 2nd Class
Joined
Jul 16, 2011
Messages
120
Re: Mercury inline six wiring diagram?

Thanks everyone, that's EXACTLY what I was looking for! :)
 
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