Wiring Diagram For 1978 Ford F250
1978 Ford Bronco Ranger XLT
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70 Posts
Discussion Starter · #1 ·
Can someone point to to some wiring diagrams for the 78 Bronco? I'd like to have all of them, but what I am in need of immediately is the ignition circuit. I've seen several links to wiring diagrams, but a lot of them seem to no longer exist. Does anyone have updated links to them?
The previous owner of my truck very poorly installed a viper alarm system and I think it is messing with the ignition. The truck will crank and crank and then try to fire once as I switch the key back to "run." I got up under the dash and examined the mess of wires, jiggled them around a bit, and then it fired right up. But now it's back to just cranking without starting.
The starter solenoid seems to be working ok, battery is good, but I did notice that it is only getting a brief spark when I let off from cranking (switching key back to "run"), which is when it very briefly tries to fire once. So I'm thinking maybe this theft system is preventing it from sparking while cranking intermittently. Or maybe ignition switch itself is faulty...
1978 Ford Bronco Ranger XLT
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70 Posts
Discussion Starter · #2 ·
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502 Posts
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29,444 Posts
Yo SHR3DD3R 09,
1978 Ford Bronco & Truck Wiring Diagrams by Ford via member Bronc Mom @ Demo78 wiring diagram.pdf
1979 Bronco/F Series Electrical & Vacuum Troubleshooting Manual via member Ziggy; similar to 78.
1979 Wiring Schematics, Connector Pin-outs, etc by member Ranger429 @ 79 wiring schematics
Similar to 78
1978 Bronco Emission Component Location Diagrams via 78brncoxlt
Bubba's M-Block Ford V8 Workshop by Dave Resch @ Bubba's M-Block Ford V8 Workshop
78 351M/400 Engine Exhaust Emission Control Information Decal & Timing by member grovermyson @ Timing - Do I need to do anything ?
C6 Auto Transmission, if equipped, Description & Operation, Adjustments, Diagnosis & Testing (partial), Disassembly & Assembly, Parts Break-Out Diagram, Hydraulic Control System Diagram, Removal & Installation & Specifications @ https://redirect.viglink.com/?format=go&jsonp=vglnk_155464716156516&key=6ed47b392b9edfe394b9e89b72717104&libId=ju70qeuf01000bgv000MAb4isjltc&loc=https://www.fullsizebronco.com/forum/6-1978-79-bronco-tech/210246-c6-rebuild.html&v=1&opt=true&out=http://www.thedieselfiles.com/Ford/C6%20Automatic%20tranny.pdf&ref=https://www.google.com/&title=C6 Rebuild - Ford Bronco Forum&txt=Description & Operation, Adjustments, Diagnosis & Testing (partial), Disassembly & Assembly, Parts Break-Out Diag...
Partial Chilton Manual for 1978, 1979, 1980, 1981 Bronco. Scanned by broncocity.com @ Bronco City
Ford Shop Manual Diagrams: 1978-1979 Full Size Shop Manuals, partial @ Technical Diagrams Archives
My Tablet takes too long to download, so try the first in this list as long as you have Adobe Acrobat 9 installed. Let me know if the downloads are worth the effort.
Includes:
Wiring Manuals & Diagrams Download PDF
This complete manual for the 1972-1979 Ford Bronco Includes Rear Lights Diagram
Motor Manuals & Diagrams Download PDF
This complete manual for the 1972-1979 Ford Bronco Includes Air Cleaner Diagram
Chassis Manuals & Diagrams Download PDF
This complete manual for the 1972-1979 Ford Bronco Includes '78 Brakes Diagram, Gas Tank Setup Diagram
Body Manuals & Diagrams Download PDF This complete manual for the 1972-1979 Ford Bronco Includes; Upper Body Diagram, Front Clip Diagram, heater Ducts Diagram, Tailgate Diagram, Console Diagram, Front Clip Diagram, Grill Setup Diagram, Heater Controls Diagram, Interior Trip Diagram, Rear Sheetmetal Diagram, Tilt wheel Diagram, Tire Rack
1978 Ford Bronco Ranger XLT
Joined
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70 Posts
Discussion Starter · #5 ·
Source: https://www.fullsizebronco.com/threads/1978-bronco-wiring-diagrams.513729/
Posted by: fiveelementt.blogspot.com
