the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

you believe this?


Post ReplyPost New Topic
< Prev Topic Next Topic >
Barqer 
Member - Posts: 20
Member spacespace
Joined: July 29, 2003
Location: United States
Posted: October 26, 2004 at 9:42 PM / IP Logged  

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

haemphyst 
Platinum - Posts: 5,052
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: October 26, 2004 at 10:04 PM / IP Logged  
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.
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."
Alpine Guy 
Platinum - Posts: 2,478
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: October 18, 2003
Location: Canada
Posted: October 26, 2004 at 10:35 PM / IP Logged  

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?

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.
Rushman 
Silver - Posts: 380
Silver spacespace
Joined: September 28, 2004
Location: United States
Posted: October 26, 2004 at 10:42 PM / IP Logged  
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.
99 F-one fitty
Pioneer Premier H/U
Alpine EQ
Kicker 1200 amp
4 Kicker comp 10s
6 kicker SS65.2 components
tbirdman74 
Copper - Posts: 164
Copper spacespace
Joined: August 22, 2003
Location: United States
Posted: October 27, 2004 at 4:01 AM / IP Logged  
Knock a hole in the bed and ground your cap directly to the frame, and more than likely your problem will go away.
If it don't fit, Force it.
If it breaks, You needed a new one anyway!
Barqer 
Member - Posts: 20
Member spacespace
Joined: July 29, 2003
Location: United States
Posted: October 27, 2004 at 7:13 AM / IP Logged  
got it. didnt even think of the ground problem. thanks very much, will be trying this on my day off tomorrow. appreciate it!
forbidden 
Platinum - Posts: 5,352
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: November 01, 2003
Location: Alberta, Canada
Posted: October 27, 2004 at 12:35 PM / IP Logged  
What's the chance that this is a Toyota truck?
Top Secret, I can tell you but then my wife will kill me.
Barqer 
Member - Posts: 20
Member spacespace
Joined: July 29, 2003
Location: United States
Posted: October 27, 2004 at 6:24 PM / IP Logged  
hmm..this IS a toyota. why do you ask?
forbidden 
Platinum - Posts: 5,352
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: November 01, 2003
Location: Alberta, Canada
Posted: October 27, 2004 at 6:39 PM / IP Logged  
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.
Top Secret, I can tell you but then my wife will kill me.
Barqer 
Member - Posts: 20
Member spacespace
Joined: July 29, 2003
Location: United States
Posted: October 27, 2004 at 6:47 PM / IP Logged  
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.
Page of 2

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Tuesday, December 7, 2021 • Copyright © 1999-2021 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer