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12-09-2009, 11:56 PM | #1 |
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Join Date: Mar 2009
Location: Concord, NC
Posts: 531
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Ground locations in the cab...
Where are the gound locations in the cab? All I can think of at the moment is the headlight switch and the fuel sender. Are there others? The reason I ask is because I got a factory style wiring harness that is very complete. Complete except for there are no ground wires included. And being that my truck was so far from stock wiring wise, it would help to know the stock ground locations so I don't miss one.
Thanks in advance for the help. Oh, and by the way, if you've followed my saga, here's a little update. I finally got everything wired up. It took a while, but I went slow making sure everything went where it was supposed to. Went to start it up and the battery was no good. I got a new battery and new cables and tried to start it. Got sparks under the hood. WTF? Turns out the positive battery cable was getting in the way down on the starter (the plunger was hitting the battery cable instead of the button on the starter). Fixed that and tried to start again. No spark at the coil. I thought I had fried the previous coil before the rewire due to crappy factory/altered wiring and possible resistor bypass. So I got a new coil, points, and condensor for just in case. Still no fire to the coil. Finally traced it to the wire coming out of the dizzy going to the negative terminal on the coil. Something was interrupting the connection there at the insulator on the dizzy case. Got it fixed and got it to fire up and got a spark under the dash. Oops, I forgot to tape up a couple of wires I didn't use as they were incompatible (the harness has wires for electrical temp gauge and I have stock mechanical, my horn is not yet hooked up because I don't have any horn guts in my steering wheel, etc.). Finally, I got everything buttoned up (I think) but it got too late to start it up and go for a ride. And I want to make sure everything is grounded properly in the cab, under the hood I'm good to go as far as grounds. No more sparks is what I'm hoping for. So untill tomorrow....And thanks again.
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"I never apologize. I'm sorry, but that's just the way I am." - Homer J. Simpson 1955 2nd Series Chevy "King Of Trucks" |
12-10-2009, 12:48 AM | #2 |
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Join Date: Aug 2006
Location: louisiana
Posts: 1,008
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Re: Ground locations in the cab...
make a known good ground from the cab to the chassis. And ground wires where ever is convenient.
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12-10-2009, 01:36 AM | #3 |
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Join Date: Jun 2006
Location: Idaho
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Re: Ground locations in the cab...
I will look in the factory assy manual, I think there is a page in the elec section that lists all the grounds.
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1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project |
12-10-2009, 08:40 AM | #4 |
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Location: Concord, NC
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Re: Ground locations in the cab...
Thanks guys for the help. This has to be the longest rewire in history, lol.
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"I never apologize. I'm sorry, but that's just the way I am." - Homer J. Simpson 1955 2nd Series Chevy "King Of Trucks" |
12-10-2009, 01:27 PM | #5 |
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Location: Idaho
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Re: Ground locations in the cab...
I forgot to look but based on the wiring diagram here is what I found.
Battery to cab. Headlights to body. Parking lights to body. Starter (internal through starter bolts) Horn to body. Headlight switch to dash frame. Tail/stop light to body. Gas tank sender to body. Instrument lights (internal through housing) Horn button (grounding causes horn to work). Ingition switch (internal through housing) Cigar lighter (internat through housing?) You also need to ground the engine, I prefer to run the wire up to the same bolt as the battery to cab. Cab and bed each need a jumper to the frame, rubber mounts isolate them electrically. Accessories are not shown, I would assume wiper motor (electric), radio, AC/heater would also need to be grounded to the cab. If you run any auxilary lights, trailer connection, they probably need grounded too, if not internally through the mounting bolts. You might check Alan Horvish site, I think he goes through the grounding check list too.
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1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project |
12-10-2009, 03:50 PM | #6 |
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Location: Concord, NC
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Re: Ground locations in the cab...
Thanks a bunch. I really appreciate the help.
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"I never apologize. I'm sorry, but that's just the way I am." - Homer J. Simpson 1955 2nd Series Chevy "King Of Trucks" |
12-10-2009, 07:41 PM | #7 |
BIG CHEVY 3600 LONGBOX
Join Date: Feb 2008
Location: Dallas, Texas
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Re: Ground locations in the cab...
I drilled a hole in the firewall behind the gauges and installed a ground block to be able to ground anything the future might present. I grounded the block to the frame which will guarantee a good ground.
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12-10-2009, 08:57 PM | #8 |
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Join Date: Jan 2009
Location: pomfret, md
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Re: Ground locations in the cab...
this'll be quite useful for me in a few days as well. Glad to see you're almost done!
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12-10-2009, 09:36 PM | #9 | |
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Join Date: Mar 2009
Location: Concord, NC
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Re: Ground locations in the cab...
Quote:
As for wiring issues, I've got headlights, all gauges, and one front left turn signal. No running lights front or back, no right front turn signal, no rear turn signals, and no brake lights. So I've got that going for me. It shouldn't be too hard to run down those problems since I am now intimately familiar with the wiring routing. But at least it's running again.
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"I never apologize. I'm sorry, but that's just the way I am." - Homer J. Simpson 1955 2nd Series Chevy "King Of Trucks" Last edited by terd ferguson; 12-10-2009 at 09:40 PM. |
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12-13-2009, 09:23 AM | #10 | |||||
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Join Date: Jan 2009
Location: pomfret, md
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Re: Ground locations in the cab...
A few questions on this, hope you don't mind my mini-thread jack
Where on the dash frame does this go? The previous owner had some things grounded to a bolt on the steering column support, is that right? Quote:
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12-13-2009, 12:12 PM | #11 | |
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Join Date: Mar 2009
Location: Concord, NC
Posts: 531
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Re: Ground locations in the cab...
Quote:
Your fuel sender sounds right. The horn button is grounded when you press the button. That's what makes it blow. The wire should go down through the steering column and out the bottom and then into the wiring harness. If it blows all the time, you've got a short, probably somewhere inside the steering column. The key switch should be grounded by the bezel screwed into the dash. I'm not sure where the engine is grounded. I'll take a look at mine and get back to you. I *think* the cab is grounded to the frame through the cab mounts.
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"I never apologize. I'm sorry, but that's just the way I am." - Homer J. Simpson 1955 2nd Series Chevy "King Of Trucks" |
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12-13-2009, 03:33 PM | #12 |
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Join Date: Nov 2008
Location: So. Cal.
Posts: 452
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Re: Ground locations in the cab...
Go to your local car stereo shop and have them cut you up 3 pieces of 2 gauge wire say 12-16" long (it's a little overkill but I've never had any grounding problems on any cars). Have them crimp the ends you put bolts through and get busy. Assuming you ran the battery ground to the engine, run 1 from the engine (should be lots of extra holes in the block to use) to the frame. Run 1 from the frame to the cab and another from the frame to the bed. Use those serrated washers (looks like a bunch of twisted edges) between each end of the cable and whatever it's bolting to, so it will bite in and give you good contact. It's pretty simple and works great! Just my 2 cents...
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12-14-2009, 10:35 AM | #13 |
BIG CHEVY 3600 LONGBOX
Join Date: Feb 2008
Location: Dallas, Texas
Posts: 382
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Re: Ground locations in the cab...
The simple answer Re. grounding is: all grounds should be routed to your frame. If you ground something to your cab be certain you have a good ground from cab to frame. Ground engine to frame. Ground bed to frame. A lot of electrical problems result from insufficient grounds.
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If I were given 8 hours to chop down a large tree, I would spend the first 6 hours sharpening my ax. Abraham Lincoln http://s729.photobucket.com/albums/w...cpZZ3QQtppZZ20 |
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