Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
new engine has the blue and black? Where are they connected on other end? Or are they in the plug?
Red wire should be the power wire that would go to the fuse, and then to the keyswitch.
Bat or B terminal on keyswitch is what color?
See Briggs manual above, start about page 20 to see the wiring.
I see question is still open did you see my response? and link to manual?