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11-02-2018, 10:07 PM
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#1 |
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Registered User
Join Date: Sep 2016
Location: Cleburne, Texas
Posts: 83
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Bus Bar Location
86 GMC
Where is the bus bar located? This is the bar that ground wires connect to such as the ground wire coming from dash tank switch. Last edited by Nickelcharlie; 11-03-2018 at 07:38 AM. |
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11-02-2018, 11:47 PM
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#2 |
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Registered User
Join Date: Jul 2011
Location: back 40, bc
Posts: 3,906
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Re: Bus Bar Location
try up above your e-brake, that's where mine is
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11-03-2018, 07:39 AM
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#3 |
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Registered User
Join Date: Sep 2016
Location: Cleburne, Texas
Posts: 83
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Re: Bus Bar Location
That is the fuse box and I know where that is. I found a wiring schematics someone posted in another forum that shows the fuse box and to the right of it shows a bus bare where ground wires are attached just like in a house fuse panel. The bus bar has been mentioned i some of the other articles. I do not see that in my 86 GMC. I took a screen shot of it but not able to post it here. It is a very detailed wiring schematics for the fuel tanks. Just wondering if some one knew where ground wires behind the dash were attached, for example the black wire coming off the dash tank switch? Trying to find all grounding places to makes sure they a clean!
Last edited by Nickelcharlie; 11-03-2018 at 06:37 PM. |
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11-05-2018, 03:29 PM
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#4 | |
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Senior Member
 Join Date: Jun 2016
Location: Beebe, AR
Posts: 462
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Re: Bus Bar Location
Quote:
Easiest way to find it is to pull the gauges and look to the left on the bulkhead. Will have (I think) 6 spades on it. Bubba |
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11-05-2018, 04:57 PM
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#5 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: Bus Bar Location
hides good way up in there .
and if factory a/c truck the vent will block you seeing it more . i have a cluster out right now and like said its up there .
__________________
77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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11-05-2018, 09:11 PM
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#6 |
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Registered User
Join Date: Sep 2016
Location: Cleburne, Texas
Posts: 83
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Re: Bus Bar Location
Thank you 1957 Chief and sweetk30, I was looking around the fuse box on the firewall. I also want to thank all that have participated in this post by offering some great suggestions, they have very helpful.
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11-05-2018, 10:04 PM
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#7 |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,977
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Re: Bus Bar Location
The fuse panel is on the firewall... The buss bar is on the LH kick panel.
Motornut posted some pictures with the dash mostly disassembled that show the buss bar. I haven't been able to find them but they do exist. It's really hard to see the sheet copper buss bar with the instrument cluster installed. You'll find it tucked behind the steel knee panel on the LH side kick panel between the door and the firewall just above the E-Brake pedal bracket.
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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11-06-2018, 07:55 PM
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#8 |
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Registered User
Join Date: Nov 2010
Location: cape may nj
Posts: 94
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Re: Bus Bar Location
In the dash where an ac vent would be in the hole you can just make it out not the best picture but it’s all I have of mine it’s bolted to the top of the e brake bracket
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11-06-2018, 08:49 PM
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#9 |
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Registered User
Join Date: Sep 2016
Location: Cleburne, Texas
Posts: 83
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Re: Bus Bar Location
Thanks wileecoyote427, I went out to the local wrecking yard and I was able to find a truck with most of the dash removed and found the Bus Bar so I took a picture for future reference. Might be another ground site that needs to be cleaned!
On another truck I found it was mounted on the kick panel just to the left of the E brake bracket even a little bit higher up! Last edited by Nickelcharlie; 11-06-2018 at 11:56 PM. |
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11-06-2018, 11:36 PM
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#10 | |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,977
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Re: Bus Bar Location
Quote:
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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11-07-2018, 10:47 AM
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#11 | |
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Senior Member
Join Date: Jun 2016
Location: Beebe, AR
Posts: 462
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Re: Bus Bar Location
Quote:
Bubba |
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11-07-2018, 12:37 PM
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#12 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: Bus Bar Location
i dont see the empty screw hole were it would have been up on the kickpanel side of the cab .
that brake location is a odd ball for sure .
__________________
77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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