Electrical connected directly to the negative terminal
What is the electrical wires and box connected to the negative battery terminal on my 2000 ford escort.
We have been having troubles with my car battery dieing. We can jump the car but as soon as we shut it off it will not even turn over. While the car was running we looked under the hood and simply touched the junction box and wires which are attached directly to the negative battery terminal and the car completely shut off and the battery was instantly dead. We assume something in this box or wires is the problem but have no idea what the wires or box are to be able and diagnose the problem.
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Re: Electrical connected directly to the negative...
First of all I don't recall any additional wiring or a junction box being attached to the negative battery terminal of a Ford Escort. I do however remember these things being fixed to the positive terminal...
The first thing that should happen is your battery should be removed from the car and fully charged and tested and replaced if necessary. I suggest you note; in the case of a completely discharged battery it is possible to inadvertantly connect the battery charger wrongly and charge the battery back-to-front or so the polarity is reversed.
Once there is a known good battery fitted to the car the correct way around and with any bad connections to or near the battery repaired it will be possible to begin the process of diagnosing the original problem(s).
A car that started with a jump start should now start from the key and the charging system can be tested and repaired if found defective..
I suggest you entrust the work to an experienced person...
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normally there is only one earth wire on a battery as all units earth through this wire to the negative terminal. I would not bother trying to reconnect the cut wires as this will lead to problems further on. Go to a wrecker that handles you model vehicle and get the positive terminal wiring loom and replace all the cut wires . Leave the negative terminal off while you are doing this.
Kia Sedona known for electrical grounding problems. Before spending any
money, follow thick wires from battery negative terminal to body and to
engine block. Disconnect and clean each connection, use oscillating
sanding tool and #400 grit to polish the surface where negative wire
connects and to polish the terminal end of the wire too. If unable to
find a negative battery wire to engine block or transmission, buy one at
Walmart $8 and install. You may need to replace your negative battery
terminal to accommodate another wire. Most likely by cleaning the
grounding or providing an express engine ground, your original
electrical problem will have disappeared along with many others you may
not have noticed. Be sure to remove and clean both battery terminals and connectors too.
Kia Sedona known for electrical grounding problems. Before spending any money, follow thick wires from battery negative terminal to body and to engine block. Disconnect and clean each connection, use oscillating sanding tool and #400 grit to polish the surface where negative wire connects and to polish the terminal end of the wire too. If unable to find a negative battery wire to engine block or transmission, buy one at Walmart $8 and install. You may need to replace your negative battery terminal to accommodate another wire. Most likely by cleaning the grounding or providing an express engine ground, your original electrical problem will have disappeared along with many others you may not have noticed. Be sure to remove and clean both batter terminals and connectors too.
the hood and locate the battery. Remove the cable from the negative
terminal (black cable) by turning the retaining nut on the cable clamp
counterclockwise with a socket wrench until the clamp is loose enough to
slide off the terminal. You must disconnect the battery's negative
terminal to avoid a potential electrical shock when working on any
electrical component in your KIA.
Open the trunk and pull back the carpet near the tail light assembly.
Remove the three nuts holding the lamp assembly in place and pull the lamp assembly out.
Remove the bulb assembly by rotating the bulb counterclockwise and pulling the bulb straight out of the housing.
Install the new bulb. Installation is the reverse of removal.
Reconnect the cable to the negative battery terminal.
Raise and support the vehicle safely.
When removing the hard shell connector at terminal -S-, grasp the
plastic shell. Do not pull on the wire.
Disconnect the starter electrical harness.
Remove the upper starter bolt.
Support the starter and remove the lower bolt.
Remove the starter from the vehicle.
Fig. The starter is located at the lower front of the engine, and
is visible through the air duct
Position the starter in the vehicle.
Install the upper and lower bolts. Tighten to 15-20 ft. lbs.
Connect the starter electrical harness. Tighten the starter cable
nut to 80-124 inch lbs. (9-14 Nm).
When installing the hard shell connector, be careful to push it
straight on and make sure it locks in position with a notable click or
There seems to be a no charge state in this case. i recommend checking the charging system. use the procedure below to isolate this issue.
Wear protective eye wear and clothing and remove all jewelry when checking your battery and charging system. Jewelry is a good conductor of electricity and is not recommended. Most batteries wear out every 3 to 5 years and need to be replaced. Always replace your battery with an equal replacement battery to assure proper operation. Automotive batteries have a +positive terminal (red), - negative terminal (black). Electricity is stored in the battery and then supplied to the vehicle when the engine is not running. While the engine is running the vehicles alternator charges the battery for future use. (Note: never disconnect the battery while the engine is running. If the battery cable is disconnected from the battery a spark can be generated which can cause the battery to explode or a major electrical malfunction to occur.)
To check a battery surface voltage, remove the positive terminal protective cover. Connect the +positive side meter lead (red) to the positive side battery terminal. Connect the - negative (black) side meter lead to the negative battery terminal. With the vehicle not running and the car sitting over night the battery voltage should be between 12.5 and 12.8 volts.(You will need to use a voltmeter for this testing procedure)
The alternator is rotated by a drive belt driven by the vehicles engine while it is running. Electrical voltage and amperage are generated to recharge the battery and supply voltage to the electrical system of the car. The alternator is held in place with mounting bolts. There is a main electrical wire on the rear of the alternator that supplies voltage to a main voltage junction box. If your alternator is not charging properly, your battery will slowly drain down from operating all the electrical systems in your car and stop the car from running.(most non charge states will be the cause of a loose belt or a low tension rate, due to a mis-adjusted alternator. make sure you have enough tension in the belt for full rotation of the alt pulley)
Next, you will need to check the alternators output with the Amp meter.
Testing the amperage output of the alternator is good for measuring the amount (not the level) of voltage the alternator can produce. This test can be tricky because if the alternator is weak it can still show it as producing amperage. Which is good, but if the voltage is low, it will still allow the battery to go dead. To check the amperage output of an alternator an amp meter is needed. Once the meter is connected start the engine. Next turn on all electrical accessories and raise the engine idle to about 1200 RPM. The alternator should output the max amperage it was designed to produce. Example: a 90 amp alternator should output about 88 amps. Note: An alternator cannot sustain maximum output for long periods of time. If the alternator is forced to operate at maximum output it will overheat and fail. An alternator is designed to operate at max amperage output only for a reasonable amount of time.
((Connect the voltage meter lead the same way you would in a battery static voltage check, Start engine (do not drive) at engine idle the voltage should be between 13.6 to 14.3 volts. If not the alternator may need replacing.)))
Use a wire brush to clean the battery terminals and the inside of the battery cables where they connect to the battery terminals. If that doesn't fix it, I suspect the problem is the negative connection from your battery to the car body/engine block. Follow the thick cable from the negative terminal of the battery to where it connects to engine block. Make sure you have a good clean metal to metal contact. Use an ohm meter to check to make sure this cable and connection is good. If the connection to the engine block is bad the hood light might still be able to work if it has a separate connection to the negative battery terminal.
Remove negative (-) battery terminal from battery. Remove drive belt from alternator pulley. Remove wiring harness (electrical connections) from alternator. Remove attaching bolts for alternator. Pry out alternator. Reverse steps to reinstall.