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nissan
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Discussion Starter #1
Ok here's one for you electricians out there!

When i put my rock lights on, my fuel guage slowly drops down to empty.
When i turn them off it comes back up to where it should be..

What the!
 

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The nutty professor
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i bet your rock lights are earthed to the chassie ?, if so run another large earth cable from the battery to the chassie
 

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Discussion Starter #6
Yer im thinking not enough earths aswell.. Cause sometimes the temperature guage goes up and down haha - But i know for a fact that its a constant temperature.
 

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Discussion Starter #7
And also.. Which battery?
Both ya reckon?
 

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Premium Member
nissan
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Definitely do the main battery.

It all depends on how and what you have wired to the second battery, you should already have a good earth from the second battery to the block or alternator.

It can't do any harm to run extra ones though.
 

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nissan
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Discussion Starter #9
Yer - Might just run some big chunky ones.. One from each battery
 

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Discussion Starter #11
No idea man.. Brother in law owned the truck before me and he got a bloke to do all the electrics.. No idea whats going off what! Ha
 

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sorry for the hijack but ive got kinda the same issue.
sometimes when i flick my lights from low to high, (with spotties on) ALL the lights go out. have to go back to low beam then try again. sometimes it will let me use the spotties other times nope.
any ideas?
 
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