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I checked injector harness with test lite. I have power on both injectors with key on and crank. When I check for ground I get nothing. Fuel pump comes on and theres fuel to the injectors. I do not have a mil light hooked up as old bobcat didn’t have one thanks again

Thanks for reply so on the kohler wiring diagram I have number 4 hooked up which is the red/white it is constant 12 volt key on and crank and I have number 6 hooked up which is dark blue going to starter solinoid

Yes I understand that. I don’t have the safety wire hooked up. I was told that the only two wires needed for these to run are the dark blue which is the starter and the red/white which is the constant 12 volt

Negative cable going to the engine case

Negative battery cable going to the engine case

Can anyone help. I’m trying to install a kohler ecv860 efi into an older bobcat zero turn. It turns over , has spark and runs with gas down plug holes. Injectors will not squirt. There is power to the injectors but no ground. Which comes from ecu. This is a new in box engine