I have an odd quick hitch problem where only one side of the lock/unlock works through the switch, and I get the other side to work from the same switch side by switching the in line connectors reachable from the cab. Tested the switch, solenoids, fuses and wiring - all good, which seems to indicate a relay problem related to the unlock logic failing more readily. Apparently, these relays are located in a black box in the lower back left of the machine, accessible only by removing the radiator and all the hoses and dismounting the fan - a big job. Is this what I have to do and are the relays located there? They are not up front.
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