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#1 |
Registered User
Join Date: Sep 2013
Location: Farmersville, TX
Posts: 238
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Re: Truck has good battery but can't get it to turn over?
That second photo looks less like a junction, and more like a circuit breaker, and those can go bad.
The issues you describe from earlier, to me, scream SHORT. As much as it sucks, you are going to have to chase wires, and find corroded spots. If you had to remove the radio to correct an electrical issue, then there is more wrong. Removing a piece, is never a correct fix. If the battery has gone from good to drained in the space of a few months, then you have an issue with wires grounding, or hots staying hot and keeping a load on the battery. Everything so far points to spots of bad wire.
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Grunt: 1971 C20 Custom Camper. Runs/Drives/Kinda stops. 350Ci, TH350. 4.10:1 D60. Eight Lug LWB is more better. Hell no its not fast! Donkey: 93 Nissan D21, the farm truck. My 1/2 ton SWB. The Indomitable Datsun. 1st BN 3rd MAR. '00-'04 ![]() |
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#2 |
Registered User
Join Date: Oct 2012
Location: Kansas and Iowa
Posts: 349
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Re: Truck has good battery but can't get it to turn over?
That's what I was afraid of.
Blackland Camper, I removed the battery because one of the previous owners thought it would be a good idea to hardwire it straight to the battery. It would turn on even when the key was out of the ignition. Even when it was turned off, there was still a drain on the battery. I was hoping I wouldn't have to chase wires. For as simple as these trucks are, there are a LOT of wires! I really hope it doesn't take too long to find the bad wire/wires. Any suggestions on where to start looking? Thanks!
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White70C20 1970 Blue C20 - 250, 4 speed 1985 Ford Thunderbird 2005 Pontiac G6 |
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#3 |
Registered User
Join Date: Sep 2013
Location: Farmersville, TX
Posts: 238
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Re: Truck has good battery but can't get it to turn over?
I would start with the wiring from the battery to the ignition switch, then move from the switch to the connections behind the dash. Some of the connections at the light switch ground through the dash, and you never know...
Here is something no one else has asked... Do your wipers, and horn work? Both of them only work when the ignition is on "Acc", or "Run". If they both work, your ignition switch is indeed passing power. Check the connections and wires from the switch to the solenoid, and the chassis grounds along the way. The main circuit you are concerned with is Battery - Switch - Starter - Ground. Good luck! It sucks, but if you have been dealing with electric gremlins already, this is something that needs to be done. Besides, consider this a good time to reinstall your radio, and hook it to switched power like it should be.
__________________
Grunt: 1971 C20 Custom Camper. Runs/Drives/Kinda stops. 350Ci, TH350. 4.10:1 D60. Eight Lug LWB is more better. Hell no its not fast! Donkey: 93 Nissan D21, the farm truck. My 1/2 ton SWB. The Indomitable Datsun. 1st BN 3rd MAR. '00-'04 ![]() |
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#4 |
Senior Member
Join Date: Nov 2003
Location: Brookings, SD
Posts: 10,497
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Re: Truck has good battery but can't get it to turn over?
The wire on that junction block, and likely the circuit breaker, should be going to the positive terminal on the battery.
Take both off the negative terminal, and attach them one at a time to the positive terminal. Trace the wire coming off that circuit breaker first and see what it is powering.
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Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs. |
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#5 |
Registered User
Join Date: Jul 2011
Location: Des Moines, Iowa
Posts: 3,016
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Re: Truck has good battery but can't get it to turn over?
I agree with BlacklCamper (doesn't look like a junction box), ClemsonChevy and 71swb4x4 (get rid of the unnecessary and clean). What is custom on this truck that it required a circuit breaker? Is it valid any longer? What is your stereo setup like? Did it have an amp etc..? Try and get the wiring back to original if at all possible.
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project: "my happy mess" Last edited by litew8; 04-11-2014 at 12:00 PM. |
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#6 |
Registered User
![]() Join Date: Jan 2013
Location: portland oregon
Posts: 156
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Re: Truck has good battery but can't get it to turn over?
The 2nd photo is a shortstop circuit breaker. It basically keeps the wires from pulling too much juice and causing a fire for something that pulls a large load. What do those wires go to? Ac/DC converter, battery charger, towing setup... Something janky. You pulled the radio. Start tracing that back to where the juice was going. Odds are there's something grounding. Then I'd refer back to the diagram provided and get it back to original as possible.
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#7 |
Registered User
![]() Join Date: Jan 2013
Location: portland oregon
Posts: 156
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Re: Truck has good battery but can't get it to turn over?
Hmm. Got to thinking. Can you take a picture showing the battery terminals and those junctions?
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#8 |
Senior Member
![]() Join Date: Mar 2014
Location: Toano, VA
Posts: 874
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Re: Truck has good battery but can't get it to turn over?
Check to see if the engine is getting spark.
That was the problem me and my father found on a '68 we were going to buy but it wouldn't start, so we checked, and no spark.
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"Sometimes I do serve as a good bad example. Glad to be of service." My Build Thread (1967 C10, lowered, EFI, daily truck): http://67-72chevytrucks.com/vboard/s...d.php?t=830809 |
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#9 |
Registered User
Join Date: Oct 2012
Location: Kansas and Iowa
Posts: 349
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Re: Truck has good battery but can't get it to turn over?
Hi guys!
Good news! I got my truck fixed (hopefully not just a temporary thing). Those two wires that I had hooked up to the negative battery cable were indeed supposed to be connected to the positive cable. I hooked them up the right way and it fired right up. The reason the headlights and the lights didn't work was because I forgot to hook up a little yellow wire to the negative battery cable (I'll admit that one's my fault for not making sure every single little wire was hooked up). I'm not going to question why it decided to work all of a sudden, I'm just going to enjoy the truck while it lasts. Thanks
__________________
White70C20 1970 Blue C20 - 250, 4 speed 1985 Ford Thunderbird 2005 Pontiac G6 |
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#10 |
Registered User
Join Date: Sep 2013
Location: Farmersville, TX
Posts: 238
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Re: Truck has good battery but can't get it to turn over?
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__________________
Grunt: 1971 C20 Custom Camper. Runs/Drives/Kinda stops. 350Ci, TH350. 4.10:1 D60. Eight Lug LWB is more better. Hell no its not fast! Donkey: 93 Nissan D21, the farm truck. My 1/2 ton SWB. The Indomitable Datsun. 1st BN 3rd MAR. '00-'04 ![]() |
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#11 |
Registered User
Join Date: Jul 2011
Location: Des Moines, Iowa
Posts: 3,016
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Re: Truck has good battery but can't get it to turn over?
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project: "my happy mess" Last edited by litew8; 04-12-2014 at 01:02 AM. |
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#12 |
Registered User
Join Date: Jun 2013
Location: West Virginia
Posts: 6,421
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Re: Truck has good battery but can't get it to turn over?
How clean are the battery connections? I ask because I haven't read the whole thread (have a head ache) and I tried to jump a guy last week and could not. I didn't think to clean his battery cable connections.
I'm going to put some sandpaper into my car's tool kit for just that eventuality. |
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#13 |
Registered User
Join Date: Oct 2012
Location: Kansas and Iowa
Posts: 349
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Re: Truck has good battery but can't get it to turn over?
I went through and cleaned up the block surfaces where the ground cables mount with a wire brush. I replaced both battery cables and the block to frame cable as well. I just made sure everything was a clean as I possibly could.
__________________
White70C20 1970 Blue C20 - 250, 4 speed 1985 Ford Thunderbird 2005 Pontiac G6 |
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#14 |
Registered User
Join Date: Apr 2012
Location: San Jose, CA
Posts: 69
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Re: Truck has good battery but can't get it to turn over?
Congrats on sticking with it until it fired. Now take pictures of the working configuration for future reference.
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