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you believe this?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=41718
Printed Date: January 24, 2022 at 12:12 AM


Topic: you believe this?

Posted By: Barqer
Subject: you believe this?
Date Posted: October 26, 2004 at 9:42 PM

i have made various posts here about my truck and trying to fix an electrical problem with it. i have made some headway, but the thing i found last night is just amazing. i have a digital cap in the bed of the truck that has a voltage readout. with the truck running, i get a readout of about 10.3 volts (should be over 13). i accidently sat on the tailgate while i was working on it last night..and the volts jumped to 13.5 (where it should be) and stayed there! stood up and the volts dropped back down. why would sitting on the tailgate make the voltage go up? think maybe a wire is getting pinched somewhere? i looked all over..cant find one, but may have to dig deeper.

also, another question. i have 2  batteries in my system. should the ground for the second battery directly attach to the first? or just each battery has a separate ground to the truck? or should the grounds connect to each battery AND each has a ground to the body? couldnt find a post that really said

thanks




Replies:

Posted By: haemphyst
Date Posted: October 26, 2004 at 10:04 PM
Pretty much without exception, the more grounds you have, the better off you will be. I would check to be certain your bed is attached FIRMLY. Certainly an interesting issue.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."




Posted By: Alpine Guy
Date Posted: October 26, 2004 at 10:35 PM

run a nice fat wire from your bed, to your frame. , ,and batt to frame.     Whats happening is that  the connections between your bed and frame  are probably rusted, not allowing the power to pass properly.  The main batt is grounded to the main body so everything in the main body is probably un affected, , but the bed is separated from the main body.

Know what im saying?



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2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.




Posted By: Rushman
Date Posted: October 26, 2004 at 10:42 PM
Sounds like the solution to me like Alpine guy said.......running the additional grounds. Im thinking the beds on alot of trucks are bolted on with some kind of thick rubber washers that might have been hindering the grounds.

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99 F-one fitty
Pioneer Premier H/U
Alpine EQ
Kicker 1200 amp
4 Kicker comp 10s
6 kicker SS65.2 components




Posted By: tbirdman74
Date Posted: October 27, 2004 at 4:01 AM
Knock a hole in the bed and ground your cap directly to the frame, and more than likely your problem will go away.

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If it don't fit, Force it.
If it breaks, You needed a new one anyway!




Posted By: Barqer
Date Posted: October 27, 2004 at 7:13 AM
got it. didnt even think of the ground problem. thanks very much, will be trying this on my day off tomorrow. appreciate it!




Posted By: forbidden
Date Posted: October 27, 2004 at 12:35 PM
What's the chance that this is a Toyota truck?

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Top Secret, I can tell you but then my wife will kill me.




Posted By: Barqer
Date Posted: October 27, 2004 at 6:24 PM
hmm..this IS a toyota. why do you ask?




Posted By: forbidden
Date Posted: October 27, 2004 at 6:39 PM
Any chance it is a 89 or newer? Anyways, Toyota in their infinite wisdom (not) decided not to ground the box to the frame, they ran a ground line from all the rear tailight circuits back to the cab. You need to run a ground wire either from the cab to the box, from the chassis to the box or from the battery to the box.

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Top Secret, I can tell you but then my wife will kill me.




Posted By: Barqer
Date Posted: October 27, 2004 at 6:47 PM
ouch..that could definitely be a problem. rob, your a goldmine of information. thanks for the help. will be grounding the bed tomorrow. hope this works.




Posted By: lolzitsmtss
Date Posted: October 27, 2004 at 11:03 PM
Damm forbidden...You know your sh*t man!

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I guess that guy has subs.




Posted By: Barqer
Date Posted: October 28, 2004 at 3:37 PM
it worked rob! thanks for the advice. its great to have my sound back after over a month of no tunes. appreciate it!





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