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How can I tell which cable is pos and neg? I changed the old ones with new and I think they are crossed.

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Universal color code is red wire is positive and black is negative
on a charger it is always red to positive terminal and black to negative terminal

Posted on Dec 17, 2016

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The ground goes bolted to the engine block, n chassisthe positive to your alternator.

Posted on Dec 17, 2016

  • leone C Dec 17, 2016

    Used a multimeter

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1 Answer

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Sounds like someone has changed the starter recently and they have the negative cable from the battery hooked up to the starter solenoid. You need to have the positive cable hooked to the starter solenoid not the negative cable.

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If all you are doing is changing to a side post battery, just connect all the positive cables from the old pos post to the new pos holder and all the neg ones to the new neg holder. If you've already cut them all off and not sure where each wire goes, all the reds are positive, all the blacks are neg. To make sure use your continuity meter to test. Connect one meter lead to any good clean metal part on the car and test between each black wire in turn, the neg ones will show a circuit, the pos ones will not.

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123Mitch eazy ,its called wiring battery in PARALLEL that means positive to positive and negative to negative ,run new wire from old battery to new battery positive, now run a new wire from old battery to new battery negative, that's it. NEVER cross neg to pos. if this helped you please let me know ,good luck .
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Gauge showing low output alt only 1yr old wondering if it could be regulator or batt or wiring


if you have access to a digital multimeter, connect the meter (set to volts) across positive and neg. terminal of the battery, should read roughly 12.6 volts, close to 10 volts, battery may be going out, also test the alt output, disconnect neg term and place negative lead to battery neg post and positive lead to neg battery cable (make sure meter is set to amps) should read near the rating, if both those, then you'd want to do a resistance test, (set meter to Ohms) disconnect battery and connect meter neg to either pos cable terminal or where the pos cable connects to the alt and connect positive lead to opposite of neg, should read next to 0, the check resistance of the ground by connecting meter between batt neg cable and body of alt.

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hook them up in parallel, pos to pos, neg to neg from one battery to another, then pos cable to battery prs and ground cable to neg battery

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I need to change the battery on the 2003


it is in the trunk under the mat not to hard remove the mat take off the cables disconect hold strap replace the battery replace strap cables and mat just make shure you pot pos cable on pos and neg cable on neg

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Chevy K5 Blazer military diesel with 12/24v system. Replacing the dual batteries and need to know battery cable pos/neg terminations. Cross connect cable looks like a frame ground. Had it connecting both...


Positive of one battery to hot of vehicle wiring harness--neg. of that battery to positive of other battery--negative of that battery to block (ground)

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How do I remove the battery?


you will need a 8 mm wrench or a 5/16 wrench to remove the side terminals on the battery. you must disconect the neg. first, then the pos.....when putting the new battery in , you must connect the pos. first, then the neg.
Please rate this,
Rob...

Sep 18, 2008 | 1998 Chevrolet S-10 Pickup

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