The batteries on my '93 FLD120 with an N14 went dead, so i took them out to have them charged. Well, stupid me, I did not take note or pictures of how all the cable were connected. I believe I have them wired correctly, but when I hit the starter button a huge spark jumped almost to the rear wheels. Makes me believe I wired them wrong.
I added a picture to my profile album
Proper Battery Wiring Configuration
Discussion in 'Trucks [ Eighteen Wheelers ]' started by joecitizen, Dec 28, 2009.
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A spark may not mean improper wiring. It usually means that the connection was not tight. Put a load on a loose wire and it will spark when it finally makes a connection.
Check all your cables are tight, they should not wiggle. If they wiggle tighten again. -
sorry notarps...it works fine for me, but then again it is my profile. Ideas that I can do to show the picture? I dont have enough posts for a pm.
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lovesthedrive, thanks i will double check the connection, but i believe i have them tight enough. any chance you tried to view the image i have in on of my albums in my profile? thx...
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At the batteries just make sure that all the positives (+) are hooked together, and all the negatives (-) are hooked together and you should be fine. Make sure the batteries are all in facing the same way. Most trucks have two big positive cables running from the batteries to the starter, one big negative to the starter and one big negative to the frame. I think Freightliner just uses the negative cable to the frame. Make sure all your connections are tight. I would think if you made a wrong connection at the batteries and caused a dead short you would have called 911 already. Since that hasn't happened the only other mistake I can see you making is having a battery in backwards and having a positive of one battery connected to the negative of another which makes a 24 volt circuit, which would explain the sparking at the starter. Be very careful! There is a huge safety factor here!!! Batteries can explode. If you don't find a problem right away, get someone to help you there before anyone gets hurt!
Good luck! -
add to that if they are not in correctly lots of very expensive parts can get fried
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heavyd & gearjammer...thx...
the spark came from one of the negative posts from one of the batteries (going from left to right, it would be the first negative terminal on the first battery). all of the positive terminals are on the same side. usually a spark occures when the last lead is connected, this didnt happen. the only spark was when i hit the starter button.
i too am concerned about blowing out other expensive electronics... -
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