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Help with Wiring/Battery Relocation


gpchris

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Hey I just relocated my battery and instead of having one pos wire going to the fuse panel and one going to the starter I have the only wire from the bat going to the fuse box and one from the fuse box to the starter. It seems ok but at the same time it feels wrong.. Help?

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Im using a pretty big wire. Is larger than the factory one that goes down to the starter. Heres a picture, keep in mind this is before i cleaned it all up. The wire coming from the battery is on top.

 

71599de5.jpg

 

 

 

So far no problems. I just thought it might affect charging because the alternator wire doesnt go directly to the battery but honestly i dont think its suppose to. Priority is running the car so the battery doesnt have to. Voltage is roughly the same as before so im not going to worry about it.

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Thats a good idea. The factory alt wire is pretty small considering the electronics that these cars run. I should probably upgrade it because im running a smaller battery so i need to make sure it stays charged up. And at the very least the upgrade would reduce dimming.

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factory wires were 8 guage IIRC...

 

and even the factory wires didn't go directly to alt from battery(went to the starter terminal and connected to another 8 guage wire), but IMO, it's a good rule to follow.

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  • 2 weeks later...

You can guess and hope all day long and twice on weekends...

 

...or you can grab a voltmeter and a length of primary wire, and TEST FOR VOLTAGE DROP. Testing is the ONLY way to know for sure.

 

Testing the starter circuits (+ and -; both are important): You'll need a length of primary wire to extend the voltmeter lead to reach back to the battery--other than that, this diagram tells you how:

Starter_Voltage_Drop_Testing.JPG

 

Testing the charging circuits (+ and -; both are important):

Alternator_Voltage_Drop_Test.JPG

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install a 1 farad cap with digital voltmeter where the stock battery was and you will be better able to gauge performance day to day.

 

also more power and a triangulated ground signal where you need it so you can start your car better and run all your accessories.

 

you still have to have a pretty solid system though for it to work, thats why I like it though. you get a digital voltmeter to view at any time. just pop the hood.

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