I have a cat 262b sn PDT02786. When you turn the ignition switch on the machine is dead. I've checked the voltage at the ignition switch and there is only 7.5 volts same at the fuse box. I have confirmed that there is 12 volts at the breaker and all of the relays in the engine compartment have 12 volts as well. the diode in the engine bay i have confirmed good. Looking for more suggestions Thanks
Sounds like a wiring issue between the fuse box and battery. Maybe corrosion.
Do you have an electrical schematic to help you trace power.? If not would you like one.?
I found a bad connection at the junction block in the engine compartment. Thanks