87 ford bronco has no electrical power My bronco was running fine til I shut it off. I could wiggle the battery cable and it would start but I noticed that the heater core had busted so I replaced it but my bronco still would not start unless I jumped it off. Long story short I have replaced the solenoid and battery but I still have no electrical power. The engine will turn over as long as I am jump the solenoid but the bronco will not start? I have no power to the headlights, horn windows, etc?

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Do a voltage drop test on the battery positive cable. Read how at the link. Voltage Drop Testing
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