Question about Cars & Trucks

Open Question

I need a complete wiring diagram for a 1950 Cub. 12 volt system with a key start, 1 wire alternator. Need it from battery to finish. Doesn't get spark for some reason

Posted by on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 4 Answers

SOURCE: ignition wiring

firingorder6a.gif firingorder6.gif 1991-1994 2.9L and 3.0L Engines Firing Order 1-4-2-5-3-6 1995 And Later 3.0L V-6 With DIS Ignition System Firing Order 1-4-2-5-3-6
4.0L Engines Firing Order: 1-4-2-5-3-6 DIS Ignition System

Posted on Nov 23, 2008

  • 1071 Answers

SOURCE: wiring an amp meter diagram

put the meter in series remove wire gointo back of alternator put one lead on wire and one on alternator that should give you your reading

Posted on Jul 23, 2009

  • 6927 Answers

SOURCE: need a wiring diagram for a bosch alternator

If you ask for a one wire delco alternator,all you have to do is connect the large wire on back of the alternator to the positive battery post on the battery.The alternator is self energizing,there for no problem with wiring up a harness.If I can help,let me know my name is Ron.>>>

Posted on Aug 16, 2009

  • 4088 Answers

SOURCE: 2002 monte carlo will not charge has a new battery

When the engine is running fast idle, the battery voltage should read 13.5 to 14.5 volts if the alternator is delivering charge to the battery. If the old alternator had a shorted diode, the very high current from the battery back through that diode will burn out what is known as a fuse link which is located within the wiring harness and it will effectively disconnect the alternator output from the battery. The battery end is connected at the starter terminal where the positive battery cable also connects.

Posted on Aug 18, 2009

  • 583 Answers

SOURCE: Will not charge

you will get some funny answers from some of these "experts " The symptoms suggest to me with out much doubt that the regulator is not doing its job correctly ,consistently.Iwould take it to an AUTO ELECTRICIAN and get it tested in situ.... there is only 4 things it can be , wireing ---battery---alternator-----regulator and of those the reg. is the only one that chops and changes. it will cost little for a sparky to check the reg ,. AND I WOULD LIKE TO KNOW THE OUTCOME

Posted on Oct 22, 2009

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

3 Answers

Where is the Alternator fuse on my 1999 Cougar v6 2.5l?

its built into the alternator. have you checked the voltages on the battery before starting the vehicle, then checking the voltage with the engine running, with engine running it should be around 14 volts with out engine running it should be about 12.06 v or higher. anything 12.04 v or lower there is a problem with the battery or there is a short somewhere and thats draining the battery.

Jul 07, 2017 | 1999 Mercury Cougar

1 Answer

2001 ford explorer sport wont charge

I'm not sure if you have all of the info you need to go forward with this.
The battery may be rated for 800 amps but could have less than 12 volts if the alternator is not charging it.
It could have a dead cell which would keep it from holding a charge.
You would need to check the charge of the battery with a volt meter, then see if the alternator is charging at 14 volts when the engine is running. The battery should be at least 12 volts with the engine off.
The problem could be in the wiring from the key switch or dash gauges back to the alternator.

Jan 26, 2013 | 2001 Ford Explorer Sport

1 Answer

'98 Mountaineer won't start and the battery sparks

You are lucky the Battery has not exploded. There is a difference if the engine does not crank, versus the engine cranking and then not starting.

For a non cranking problem, a common problem is the Interlock switch attached to the upper brake pedal lever. Usually this switch gets smashed by feet and then will short out. The broken switch can easily cross wires and cause sparking.

Wiring diagrams are available free at when you register your car. It sounds like some new parts may not have been properly connected. Compare the wiring diagrams with what you have. They have letters on the diagram representing the colors in the wire.

Disconnect your battery. Then check wiring and the switch I mentioned. Auto slang name is BOO switch.

Ford built products also require a strong battery to make the Security system perform properly. A charge of 13.2-13.6 volts is normal. The Antitheft gets cranky at anything approaching 12 volts. The Antitheft will reduce Voltage to the starter to around 7.5 Volts to prevent theft when Voltage approaches 12 Volts. Also the Battery Saver feature can disengage the charging circuit if Voltage drops to a predetermined level.

A minimum of sparking when connecting the battery is possible, interior lights and switches caught in midcycle need to complete their cycle. But not a strong spark which indicates a "Dead short".

Dead shorts are traced with the power off and using an Ohmmeter to find what device is grounding to the frame of the vehicle. Easiest to describe is you have 2 terminals, positive and negative. They only are suppose to connect to make a part work. If they connect improperly at some other place, you have a short or the part is shorting out internally. You would test the positive terminal of any part and it should not be connected to the negative ground until it is switched on to work. When you find a circuit with the wrong charge, that is where it is grounded.

I hope my solution helps you.

Aug 29, 2012 | Cars & Trucks

2 Answers

Have a 89 suberban and the alternator and battery test at autozone is showing good but still not working. Cleaned termenals grounding is good. How do I check if the small 1 wire on the altanator is working...

With key on,it should read 12 volts,now check the large wire on the back of the alternator with key off,it should read 12 volts,if it does not,then ,it is not getting voltage from the battery,just run a wire,the same size,or larger on the back,along with the other wire,all the way to the battery positive side.This will solve the problem.If the small wire is not getting voltage from the ignition switch,then there is a fuse blown,or the ignition switch is bad.You can run a wire from the fuse box,to the alternator,just make sure it is on a fuse that just has power with key on,not off.If this was at all helpful,please rate,thank you.

Jul 31, 2010 | GMC C1500 Cars & Trucks

2 Answers

Battery won't charge when car is on. Battery is fine. Believe it's a problem with the wiring

If the alternator has been bench tested and passed then you need to check the big wire for 12volts at the alternator. If you have 12 volts then you need to trace the other wire to the PCM. The charging system is computer controlled and its possible the computer is the issue. To diagnose this correctly go to mitchell1diy online and pay the ten bucks for all the proceduers and wiring diagrams. If the charging system light is off then try this. Charge up the battery. Then turn the lights on for a couple minutes to drain the surface charge. Then using a 12v meter hooked to the battery check the draining voltage while cranking. A good battery will maintain a 12 or better voltage even if the truck does not start. If it goes down fast then the battery is bad. Alot of times when a battery is tested using a professional tester they pass. You may need to remove the fuel pump relay so the truck does not start for this test since your testing the cranking amps. Also with the key out of the ignition and doors locked and the negative unhooked at the battery you can check for parasitic drain. Using a amp meter hooked up inline battery to cable you should have less than 1/10th volt. If any more then you have a component not shutting off. Pull fusses 1 at a time till you find the system thats the issue. Watch the meter as you pull fuses

Jun 08, 2010 | 2001 Ford Ranger Regular Cab

2 Answers

1951 plymouth cranbrook 12 volt system conversion

Purchase a one wire (12 volt) alternator,and install it,and it uses one wire only,the out put wire to the battery from the back of the alternator.Then replace all lamps,and bulbs with 12 volt replacements.Disconnect the voltage regulator completely.The radio,if original,will need a voltage reducer,purchase a coil resister to put in line on the positive input to the radio.This coil resister will reduce the voltage to 7 volts,witch will be fine.The starter will work fine,leave it alone.All dash lights will have to be changed also,to 12 volt bulbs.You can find these replacement parts at any N A P A auto parts store.The resister is a part number irc 13,and the alternator will end in a sw,this means single wire.

Jan 17, 2010 | 1983 Plymouth Turismo

2 Answers

Will not charge. replaced alternator, and voltage regulator. fusible link is good. battery tests good

good the alternator you installed be bad? if it tests good then theres a fuse or a wire thats bad, check links at starter and battery and alternator if it has them there,start there, i would first have that alternator tested.good luck. also check wiring to regulator had problems with that!!!!

Nov 14, 2009 | Lincoln Mark VII Cars & Trucks

1 Answer

84 CK TRK, 2500, 5.7L 55,000 miles have replaced alternator twice - battery still reads 12 volts. Trickle charge on battery OK and engine starts up OK - terminal 1 on alternator wire (brown) reads 2.4volts...

On some of the older style GM's you can take that brown wire and cut it and take the end leading from the alternator and hook it directly to the hot terminal on the alternator and just leave it hooked up and it will work. But I have ran into the occasional problem where leaving it hooked up will drain the battery when the vehicle isn't running. Hope this helps..

Oct 24, 2009 | Chevrolet Silverado 2500 Cars & Trucks

1 Answer

Actually its an 87 but still a bronco

looks like you burnt the fuseable link from the alternator . you need to check the voltage at the back of the alternator on the red heavy wire with the battery fully charged and key off you should have battery volts at this terminal and if there is voltage you need to put a load on that wire with a 12 volt light bulb. . the bottom line is your charging system isnt working . so we need to find where it has lost its connection. let me know if this doesnt work and ill send a wiring diagram with directions.

Aug 24, 2008 | 1995 Ford Bronco

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

21 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

79024 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

john h

Level 3 Expert

13652 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides