Electrical hacks. Maybe.
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Electrical hacks. Maybe.
 
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Hi there, I just bought myself an 86 bronco and couldn't be more excited to get to work on it. I do need to get the lights all working first. A bit of background, I work on Toyotas for a living and have for 16 years so I should be familiar with some of the terms used but I don't work on anything that's carbureted. This truck has been through a lot of hacks, none off the electronics work at all. The fuse panel doesn't get voltage to it. It starts and runs and drives, alternator has 13v but there are a lot of wires cut under the hood. I printed out some wiring diagrams from alldata and identifix at work but it doesn't really show me power going to the fuse panel. Could someone please give me some direction that maybe has some knowledge? These pictures don't seem to be very big but I can get more detailed ones. Thank you for this great resource!
 
1986 Bronco
351w carb 4x4 4 speed manual |
Re: Electrical hacks. Maybe.
Administrator
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You are a candidate for the Electrical & Vacuum Troubleshooting Manual (EVTM) from Ford. It breaks the wiring diagram into systems. And the specific set of pages you need are here: http://www.garysgaragemahal.com/charge--power-distribution---gasoline-engines.html, the significant pages of which I'll paste below.
I'm going to guess that you have a blown fuse link. Most of those are attached to the starter relay on the fender, and the easiest way to check them is to pull on them. A blown one will stretch like a rubber band 'cause the wire inside is blown. A good one is a solid piece of wire.  
Gary, AKA "Gary fellow": Profile
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
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Re: Electrical hacks. Maybe.
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In reply to this post by FL86BRONCO
 . I hate when people leave razor sharp points on zipties.
Circuit 37 is a thicker yellow wire that provides power to the fuse panel. Note that fusible link (M) comes after the splice where it splits. And (L) provides power to the light switch.
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake. Too much other stuff to mention. |
Re: Electrical hacks. Maybe.
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Re: Electrical hacks. Maybe.
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There isn't much connected to the starter relay right now.
1986 Bronco
351w carb 4x4 4 speed manual |
Re: Electrical hacks. Maybe.
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Administrator
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Re: Electrical hacks. Maybe.
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In reply to this post by FL86BRONCO
So after working on cars for 12 hours at the dealer today it took all of 15 minutes of being home on the couch before I had to go track that black and orange wire down.
 I did and it's intact! But it leads to an oval connector that I do not have anything to plug into. Perhaps the original starter relay? Here's a picture maybe someone would recognize it. I sure do love this thing. Thank  you for the responses/help!
1986 Bronco
351w carb 4x4 4 speed manual |
Re: Electrical hacks. Maybe.
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Administrator
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I think that is C610, which you can see on this page:
Gary, AKA "Gary fellow": Profile
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
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Re: Electrical hacks. Maybe.
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Administrator
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Re: Electrical hacks. Maybe.
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Re: Electrical hacks. Maybe.
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Administrator
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Re: Electrical hacks. Maybe.
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Administrator
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Re: Electrical hacks. Maybe.
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Administrator
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Re: Electrical hacks. Maybe.
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Administrator
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Yes, the voltmeter and charge indicator lamp is the best solution. I've looked more than one to see how easy it would be to put a charge indicator lamp in an ammeter hole on the Bullnose gauges, but it wouldn't be easy.
Gary, AKA "Gary fellow": Profile
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
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Re: Electrical hacks. Maybe.
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I'd like to thank you guys, I went to the pull a part here in Jacksonville and found the end of c610 connector. Got home cleaned it all up and we have power! I at least have brake lights now, headlights work but previous owners put a 25 amp fuse in there so I swapped it out and it blows as soon as I turn on the lights. So I'll have to figure out whats going on there. I wanted to give an update and a thank you for the help and the site!
1986 Bronco
351w carb 4x4 4 speed manual |
Re: Electrical hacks. Maybe.
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Administrator
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Excellent! Glad you figured that much out. It is one layer at a time peeling these onions, but pretty soon you'll have enough to have a Bloomin' Onion!
Gary, AKA "Gary fellow": Profile
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
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Re: Electrical hacks. Maybe.
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Administrator
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In reply to this post by FL86BRONCO
Maybe one of those missing marker lights is grounding out?
I have a feeling you'll be following a bunch of harness to rectify whatever the previous owner did. It's great you were able to get a good section of harness at the junkyard. V 
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake. Too much other stuff to mention. |
Re: Electrical hacks. Maybe.
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