Alternator Ground
9 Attachment(s)
The importance of a good Ground.
It has been getting colder here in Southern California the last week or so, and this has been of the few times that I have had my Grid Heaters cycle when I first started the truck. The first shown my battery voltage with the Grid heaters OFF @ 14 volts. Attachment 60336 And this is with the Grid heaters ON @ 12.5 volts. At this time, the headlights are ON and the truck is IDLING. (This the time when your lights would be dimming and your volt meter would be pegging discharge) Attachment 60337 How do I do this you are asking yourself... Remembering that my heaters are drawing 204.7-Amps Attachment 60338 The first answer is my 160-amp Leece Neville alternator that will charge 100-amps at an IDLE. Attachment 60339 The second thing are the way I have the alternator connected, not only is the POSITIVE cable connected to my battery using #2 welding cable, so in the NEGATIVE or GROUND cable, (both names are interchangeable) I have it connected to the alternator using #2 welding cable. (Yes I will replace the shrink tubing on the lug) Attachment 60340 Looking at my NEG-GROUND connections: Top left backside with green shrink tubing is from the alternator (-) #2-gauge. Top front heavy cable is NEG-GROUND for Aux #1 battery 2/0-gauge. Top right with green shrink tubing is to a grounding block at the Main battery #2-gauge. Bottom with the heavy cable grounds the engine block to the chassis at the left front frame rail 2/0-gauge. Attachment 60341 The grounding lead from the front of the block connects to this solid copper terminal block where I use as a fixing point for some of the systems requiring a ground connection including headlights, blower motors and control relay circuits. I have several of these ground terminals strategically located under the hood for various connections. Attachment 60342 To supplement its path to the battery I have also installed a jumper I made of #2- gauge welding cable from the terminal block directly to the NEG terminal on the main battery. So in essence my alternator is connected directly to my battery through about 4 feet of #2 welding cable, there is very little resistance or voltage drop in this connection as compared to factory 6-gauge alternator charge wire and 10-gauge fuse link. Notice I already have battery cables made from 3/0 welding cable with crimped on copper ends. The factory battery cables are only 2/0 cable Attachment 60343 Here is more detail how I mounted the terminal block to the body, there is a star washer between the block and the core support and it is secured using a 3/16” stainless steel bolt, washer and nylock nut underneath. http://i16.photobucket.com/albums/b3...J/IMG_1990.jpg This is what the new grounding terminal had replaced. Attachment 60344 Everything I have showed you here YOU can benefit from to enhance your charging system and allow it to operate at its maximum output. What I am trying to say is your NEG-Ground connections are as important and necessary as the POSITIVE connection. Way back when, The first thing I did to my factory stock tiny little 120-amp Nippon-Denso alternator was to replace the stock wiring using lengths of #2 welding cable connected from the alternator terminals directly the battery, this made a huge improvement in the overall charge rate. I would also strongly recommend installing a 150-amp power fuse (I have a 200-amp fuse protecting my alternator) between the cable and the battery to protect the battery in the event of a catastrophic short. Any questions? |
7 Attachment(s)
How I make my cables.
First I will trim the end of the cable that I am going to use, in this instance this is a jumper using #2 gauge welding cable. It cuts with ease using my pair of $300.00 Klein Ratcheting Cable Cutter, they operate using very little effort. Attachment 60329 Then I trim back the insulation to expose the 636 strands of copper wire. Attachment 60330 After inserting the bare strands into the new clean copper lug, it is inserted into the crimper after selecting the correct set of dies. Attachment 60331 Pull down on the handle until it bottoms (this does requires some force) then retract the handle opening the dies and you have a finished crimp. Attachment 60332 All that is left is to cut a section of heavy wall adhesive lined heat shrink tubing slipping it into place over the terminal and then using my Master Heat Gun shrink it into place. Attachment 60333 I know some people are thinking that a crimp is not a good connection and corrosion might get inside the wire. Not possible, using the correct set of dies for the proper lug or terminal ensures the correct force is used to crimp the junction so tight the strands actually become one piece of copper. I have cut open an old terminal end I made using 3/0 or 000-gauge and the 1586 strands of 30-gauge wire were crushed so tightly together they could not be separated. Here are some of the types of terminal I work with. Attachment 60334 I have a couple of them. Attachment 60335 One of my specialty when I worked for Los Angeles County was a coach/ truck electrician in addition to being a Diesel Mechanic. Jim |
Excellent, I do admire your work. I've solved several of my electrical issuses by cleaning/adding welding cable grounds.
Will this work/help on the stock alternator too? Thanks for documenting. |
Originally Posted by KRB
(Post 3046841)
Excellent, I do admire your work. I've solved several of my electrical issuses by cleaning/adding welding cable grounds.
Will this work/help on the stock alternator too? Thanks for documenting. |
those heat elements are the next thing to a dead short, up here on top of the cajon pass, weve been scratching the 20's, early for the colder season, my truck sits in a insulated garage, and still cycles the heaters, i like your klein kollection.
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Originally Posted by KRB
(Post 3046841)
Excellent, I do admire your work. I've solved several of my electrical issuses by cleaning/adding welding cable grounds.
Will this work/help on the stock alternator too? Thanks for documenting. |
Thanks Jim
Never realized just how important a ground it @ the alternator, until I read your thread. Next chore on my list.... T. |
Originally Posted by sooty
(Post 3046877)
those heat elements are the next thing to a dead short, up here on top of the cajon pass, weve been scratching the 20's, early for the colder season, my truck sits in a insulated garage, and still cycles the heaters, i like your klein kollection.
Back to your normal program......:cool: Nice thread Jim. as always.[guitar] |
Jim, great info. Do you happen to have the part # for the alternator? TIA...Mark
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Originally Posted by maybe368
(Post 3046980)
Jim, great info. Do you happen to have the part # for the alternator? TIA...Mark
https://www.dieseltruckresource.com/...s-t247286.html IIRC he lists the PN at the end.:cool: |
Thanks, right in the first paragraph...110-555JHO...Mark
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Originally Posted by maybe368
(Post 3046980)
Jim, great info. Do you happen to have the part # for the alternator? TIA...Mark
8LHA2070VF 110-555JHO http://www.prestolite.com/pgs_produc...esh=1322425227 You can get these at almost any Truck Parts Store or Truck Stop in the nation. Jim |
Thanks a million, you my friend do good work!!! (how's that for an under-statement) [laugh][laugh]...Mark
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"Holy mackeral Andy" What a write-up!!
Too bad you weren't a Mopar Engineer back in the day. It would have been done right in the first place. [dummy] |
Originally Posted by Jim Lane
(Post 3047004)
8LHA2070VF 110-555JHO
http://www.prestolite.com/pgs_produc...esh=1322425227 You can get these at almost any Truck Parts Store or Truck Stop in the nation. Jim |
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