mercruiser 260 v8 5.7L help

Joined
Apr 13, 2021
Messages
28
like title says i have that motor and the wiring was done wrong from last owner i think because i hooked up a battery and turned key on and the wires got fried so i'm redoing the wiring with a new harness and need the right diagram i looked online and alot of them look like they might work until i get to a point then the wires i have left to do don't add up
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
47,307
Wiring diagram is in the factory manual.

However since the 5.7 has been around for 5 decades, 6 ignition systems, 6 or mor induction systems and 4 major block family changes

What mercruiser do you have. Lets dial it in to a specific year at a minimum, preferably with a serial number
 
Top