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Back wards battery fiasco

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Old 06-10-2017, 01:11 PM
Gunnerboy Gunnerboy is offline
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Back wards battery fiasco

So i have been doing concrete pads to park on, Had to move my bronco, battery was out because i have a short somewhere draining it, Neighbor kid was helping he offered to move my bronco and hooked up the battery backwards ...After arcs sparks and smoke now it wont start..SO its a 84 Carbed 300 six, So i see some fuse wire ? what should i start checking ?
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Old 06-11-2017, 04:12 PM
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I replaced all the fuse line wires that were soft, Replaced the starter solenoid and still when i hook up the battery which is charged i get no lights no power anywhere... Suggestions?
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Old 06-11-2017, 11:17 PM
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I have a 1986 manual. Ford sometimes changed between years AFAIK. The 86 shows fuse link J which has a red wire on one side and Black/Orange on the other. Fuse link M has a yellow wire on both sides. They are located near the R/H (passenger) fender apron and dash panel. Again not a 1984 manual. If one of those fuse links wasn't changed you won't get power.
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Old 06-12-2017, 09:54 AM
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I changed all the fuse link wires out, Re wired down to the alternator, Checked the starter wires... It gets power everywhere but is not sending it to the cab, lights, or allowing me to start the vehicle..i said screw it im gonna convert it to duraspark II anyways so i started gutting the old wiring out..off to the junk yards i go.
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Old 06-12-2017, 04:52 PM
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Good luck! I wonder if it fried the ignition switch?
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Old 06-13-2017, 10:18 PM
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Now im really baffled i got the duraspark II set up hooked up so no computer crap and still no lights or power...I was really thinking that it would be the computer being fried to cause that..So should i disconnect and change out the starter wires ? the black negative and ground ? Im about to dive into the next wiring harness with the plug and fat yellow wire below the solenoid.. but i really dont want too.
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Old 06-13-2017, 10:57 PM
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There is 12.1v at battery and at the solenoid..but when i check the alternator wire or any wire off of the voltage regulator or headed to the alternator from solenoid i got nothing..
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Old 06-14-2017, 01:14 AM
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Have you tried a different battery?
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Old 06-14-2017, 04:02 AM
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You need the proper wiring diagram for your exact truck. Somewhere there is a fuse or link that is fried.
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Old 06-14-2017, 08:09 AM
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Quote:
Originally Posted by grumpin View Post
Have you tried a different battery?
yes same results , and finding a diagram for this bronco has proven difficult.. I have wires that arnt shown on the diagrams I find
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Old 06-14-2017, 09:05 AM
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I don't know if this will help but you can buy one vehicle repair info from ALDATA or MITCHEL. Both should have the diagram(s).
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Old 06-14-2017, 09:19 AM
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well..im used to working without diagrams..i install alot of water pumps and one out of 10 have a diagram...lots of fun with 3 phase..Anyways What does that voltage regulator beneath my solenoid control? I know power is being put somewhere and killing the circuit.
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Old 06-14-2017, 08:00 PM
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Finally found it...The main power alternator wire is bent from factory in a loop..well i trimmed back re spliced into it and had that wire straight when i bent it back to its old form power flowed thru..So New alternator wire is all i seem to need so far.. Havent tested tach, speedometer or any dash lights but everything else but rear window seems to work ok..
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Old 06-14-2017, 10:55 PM
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I don't understand how that would cause or fix the issue
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Old 06-14-2017, 11:16 PM
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The bend in the wire broke when i straightened it out once i bent again it continued current. I see that with old wires inside pumps..but its normally 14-18 ga that breaks not 12ga? So its odd.. I think ill wire it back with 10ga and a in line fuse of 90a.
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