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GMC dude
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Jun 23, 2010, 9:08 AM
Post #1 of 6
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Fuse Panel help GMC '72
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1) I have a 72 GMC and would like to know how do I recgnize or identify what is the chassis ground (negative) on my fuse panel?
2) Also, which part or connection on the fuse panel is hot only when vehicle is running? ...ex: radio? Besides the radio, is there another location?
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 23, 2010, 9:25 AM
Post #2 of 6
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Re: Fuse Panel help GMC '72
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If that is the knowledge you have of electrical circuits, I suggest you not mess with the system. The fuse panel is all power. There is no ground because it's job is as a power supply source.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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GMC dude
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Jun 23, 2010, 10:44 AM
Post #3 of 6
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Re: Fuse Panel help GMC '72
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Im not sure how you concluded that I intended on 'messing' with my electrical system. I wouldn't dare do such thing. My question asked how do I identify what from which so for my own personal knowledge. Yes it is apparent and obvious that the fuse panel is all power considering it powers the vehicle and its operatives. Im reading up on alarms to see how they're wired, etc...and was curious to learning how and what powers what, which shares power, etc; and yes there is such thing as a chassis ground (negaitive), which comes from the negative side of the vehicle battery. So, my question was, on the fuse panel, which outlet runs to that side of the battery. For exampe, does it stay hot when vehicle is off or hot all times when vehicle is off? (ex. like a cigarette lighter). There definitely is a ground bc the fuse panel doesnt supply constant power to all its connections while vehicle isn't cranked. I believe this is typically where the black wires are coonected. I have quite a bit of knowledge on it but thought Id attempt to seek someone whom perhaps knew a bit more for my confirmation. If I had further knowledge of electrical circuits, I wouldnt have posted my question.  If you better understand my question, please let me know. Thank you. 
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GMC dude
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Jun 23, 2010, 12:15 PM
Post #5 of 6
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Re: Fuse Panel help GMC '72
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Thanks for your reply- I suppose. Not sure if you're reading thoroughly or even comprehending fully what I mean, but never did I state that there was a chassis ground negative associated with the fuse panel itself. I related that subject to the battery in the form of a question -meaning I was asking something which solicited and required a simple and direct yes or no follwed by a correct reply rather than getting a know-it-all-arrogant reply. ...feel free to reread my prev post. Anyhow, its ok to acknowledge you do have all the answers. You're making more out of this than it has to be. My inquiy was simple and straight forward. I'd respect that more. Perhaps Im not wording myself correctly, but doubt it. If you cannot anwer my inquiries civily and respectfully w/o attempting to try and make someone look incompetent or stupid, then don't reply to my posts. So it appears you dont know jack about black, red or yellow wires to have enough professonalism or proper adult mannerisms to even point me in the right direction. I do thank you for answering part of my questions which reads: on the fuse panel, which outlet runs to that side of the battery?... You're reply was: circuits that are fused on the ground side of the circuit. You gave me the answer and you didnt even know it. So, can you now answer this, which circuits are fused on the ground side of the circuit? Thanks
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