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Positive and negative hookup for Schumacher 2/40 charger

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  • Cars & Trucks Master
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Red to + black to - posts on the battery.

Posted on Dec 18, 2016

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Posted on Jan 02, 2017

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2006 dodge dacota radio wiring harness


2006 Dodge Dakota Car Stereo Wiring Guide
Car Radio Battery Constant 12v+ Wire: Blue/Red
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the fusebox for switched power.
Car Radio Ground Wire: Black
Left Front Speaker Positive Wire (+): Dark Green
Left Front Speaker Negative Wire (-): Dark Green/Brown
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Right Front Speaker Negative Wire (-): Gray/Brown
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How to determine positive & negative terminals to jump-start batteries/charger for Milwaukee 18 volt batteries and power-plus 9.6-18volt universal charger


Put a meter across the terminals the red is positive the black neutral if you get a positive voltage you have them the right way round if not you'll get a negative voltage.

Nov 23, 2016 | Cars & Trucks

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How do i hook the charger up


talking car battery and charger
connect the charger positive to positive of the battery and charger negative to negative if the battery
connect the leads first then turn the charger on

Sep 15, 2016 | Cars & Trucks

1 Answer

Trying to charge battery for first time. It says connect two red connectors. Do you charge it first then connect the connector afterwards?


1. I assume this is a car battery so the first thing you do is to disconnect the vehicle cables from the battery terminals. The negative first and then the positive. The positive terminal is marked with a plus sign ...+ ... When refitting the cables to the
battery after it is charged you fit the positive cable to the positive battery terminal(+) first and fit the negative(-) last.

2. Now that the battery is unconnected from the vehicle you can fit the charging cables to the battery terminals. The charger you have should have 2 cables leading from it , a positive with a red plastic insulation on the clip and a negative cable probably with black insulation on the clip.The instructions with the charger will tell you in which order the cables are to be attached to the battery and the order you remove them. Each of the 2 cables has to be clipped onto the correct battery terminal. The positive cable(+) from the charger goes to the positive battery terminal (+)and the negative cable(-) from the charger goes to the negative battery terminal(-).

3. Once the cables from the charger are properly connected to the battery, you can plug in the charger and turn on the power.

4. Batteries generate explosive gasses when being charged and it only takes one small spark to ignite them. Don't reconnect the battery after charging for a half hour or so and make sure the area where you are charging is well ventilated.

Dec 18, 2015 | Cars & Trucks

1 Answer

Can you boost off a 99 crown victoria battery


Yes, you can. Be advised to hook the positive cable to the positive posts first ( + ) on both batteries, then the negative cable to the "good" battery negative post ( - ) next, then to the "bad" battery's negative post.
It is preferable to do the last step hookup to the engine block (or somewhere else that is steel) than the bad battery to prevent a spark which very rarely can make an explosion.
Also remember. Your alternator is not a battery charger. Therefore, if and when you decide to "boost" someone else off, after you hook up the cables you may well need to have your car engine running about 1,500 RPM and leave the cables to the "bad" battery on for about 5 minutes.

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Need to charge and battery is under the back seat, are there terminels under the hood to hookup to


there is a power center (referred to as the 'power distribution center) under the hood, it has a plastic cover-there is one large cable at the top. bolted to a stud-that is your main power feed from the battery to the power distribution box. Connect the positive charger cable there.

Jan 26, 2011 | 2000 Buick LeSabre

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How to charge battery


Hello: Make sure key is off, open hood, on passenger side near inside of of fender you will see the positive and negative connections that go to the battery. (the battery is under the back seat on the passenger side, you might check connections to the battery for excessive corrossion) When checking for corrosion, remove cables from battery, the negative (black) first then the positive (red) Make sure key is off. If no corrosion re-connect battery. Hook up charger under the hood (black lead to black ground point and red to red positive point. then follow directions on your charger. Remember ignition key off.

Jan 24, 2011 | 2000 Buick LeSabre

1 Answer

Battery change


disconnect battery from car
get a battery charger
plug the red positive to the positive of the battery
plug black negative to the negative of the battery
and wait until charged wait a few hours depends on charger

Jan 02, 2010 | 2005 Audi A4

2 Answers

Need to charge battery on my chevy venture. Please show me how


Okay... One can not see the negative battery terminal so.... Connect the negative clip from your charger to the chassis and then remove the RED plastic cover in front of the black relay box above the battery OR the plastic cover from the positive battery terminal and connect the positive cable. Make sure you have good connections by watching the meter on your charger. Then plug in the charger and turn it on. Charge time depends on the strength of your charger. I'm going to go hook mine up again because I need to go out for a bit. I don't think I'm going to like changing this battery..... Just thought I'd share..... Good luck.

Sep 19, 2009 | 1999 Chevrolet Venture

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