Please help cant find the correct wiring digram

[The lawn ranger]

I have a 86 or 87 merc 150 xr2 ser. 0B199676 i cant find a diagram that shows a rectifier and regulator , whats missing is the part that mounts on top with 2 wires going to the recrifer, with a total of 6 wires going to it,,, the only diagram i can find only has 4going to it,, im beginning to think there isnt one, can someone please help me?

 

[Dukedog]

can't find a dia for a 16 amp system.. only a 9 and a 40!!!

rectifier you should have two yellows (from stator) and one red (from + batt at start solenoid or from harness) plus a gray (makes to either yellow) for tach at rectifier.. a red and a yellow from regulator to rectifier. all reds are common (+) no mater where they originate...

"whats missing is the part that mounts on top with 2 wires going to the rectifier"

that would be tha regulator.. it will be a yellow and a red wire going to tha rectifier....