Export thread

The murray riding mower I have will not all even crank. In the wiring system from the wiring harness to the alternator wire the connecting wire has 3 wires and one of those wires is black which would indicate that might be a ground but I'm unsure of where it goes. Any help is greatly appreciated. Murray riding lawn mower model #309029X92C

Try searching on line for a wiring schematic .
I have a older schematic but having a brain moment that keeps me from posting the pic .

SeniorCitizen said:

Try searching on line for a wiring schematic .
I have a older schematic but having a brain moment that keeps me from posting the

Click to expand...

my problem is my brain does not work as well when I was in my 20s even though I have looked at wiring diagrams and solved them but now I can not tell origin for anything anymore

Good luck with finding the correct Wiring schematic! If you are referring the the BLACK at the motor connector; it goes to the terminal on the coil for the "Engine Stop Circuit". The Murray I have been working on has been a real PITA! I finally made my own wiring diagram

BGS Mex said:

Good luck with finding the correct Wiring schematic! If you are referring the the BLACK at the motor connector; it goes to the terminal on the coil for the "Engine Stop Circuit". The Murray I have been working on has been a real PITA! I finally made my own wiring diagram

Click to expand...

still doesn't show my connection which what I not seeing in the manual for the motor and murray chassis wiring harness doesn't show up. the dual alternator connector has 3 wires one is black but unsure where it goes.

That Guy88 said:

still doesn't show my connection which what I not seeing in the manual for the motor and murray chassis wiring harness doesn't show up. the dual alternator connector has 3 wires one is black but unsure where it goes.

Click to expand...

You will have to remove the top plastic cover on the motor. At the flywheel you will see the coil, and underneath it a small "tab" This is where that black wire attaches.

BGS Mex said:

You will have to remove the top plastic cover on the motor. At the flywheel you will see the coil, and underneath it a small "tab" This is where that black wire attaches.

Click to expand...

that's already been attached

the wire I'm talking about is the one that goes from stator or alternator out to the chassis wiring harness cause the alternator is a dual charging system.

That Guy88 said:

the wire I'm talking about is the one that goes from stator or alternator out to the chassis wiring harness cause the alternator is a dual charging system.

Click to expand...

So, it's the smaller connector that comes from the Chassis Harness? Does this black have a large "lump" just before it enters the connector on the engine side? If it does that is a Diode. Do you have a pic?

doesn't crank is about a helpful as doesn't work. Do you know how to troubleshoot do a basic testing of a battery charging and starting system? Own a VOM? The battery could be dead. When was the last time it ran?

BGS Mex said:

So, it's the smaller connector that comes from the Chassis Harness? Does this black have a large "lump" just before it enters the connector on the engine side? If it does that is a Diode. Do you have a pic?

Click to expand...

have no picture. at the beginning of the wire it has a two wire connector that connects back to the chassis harness then too the engine

sgkent said:

doesn't crank is about a helpful as doesn't work. Do you know how to troubleshoot do a basic testing of a battery charging and starting system? Own a VOM? The battery could be dead. When was the last time it ran?

Click to expand...

battery is good tested that out already it was 12.66 volts

That Guy88 said:

battery is good tested that out already it was 12.66 volts

Click to expand...

if that is while cranking it is excellent or indicates resistance between it and the starter, ground etc.. If that is just sitting it really means little. It can fall to 8V or 9V when cranking. The test has to be when cranking to see how well the battery holds the voltage.