New 140 amp Alt - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

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post #1 of 23 (permalink) Old Aug 26th, 09, 08:46 AM Thread Starter
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Chris
 
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New 140 amp Alt

Hello Guys! I installed a new Alt a couple of months ago. It came with a new wire. Before I upwrap my loom, I want to be sure. Does this wire meet a spliced and soldered lug before it gets to fuse panel or does it bolt directly to the panel. I never did it. Want to make sure before I do it.
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post #2 of 23 (permalink) Old Aug 29th, 09, 06:31 PM
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Chet
 
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Re: New 140 amp Alt

I take it that the new wire is for the charging post on the alt that is bigger than the one that is currently there. What I did when I upgraded to my 140 amp alt, was to just add another wire to the alt charging post direct to the positive post of the battery instead of undoing my wire harness. The guys with the tuners do this that run big amplifiers and other high load equipment. I used 4 gauge fine power wire that the audio guys use with gold plated ring terminals and inline 150 amp fues closest to the battery to protect the system. Get at least 2 more 4 gauge negative wires for the chassis to block to supplement the negative side of the charging system. I didn't remove any of my stock wiring form the car, just added to it and the electric will travel the path of least resistance, but make sure you do both the negative and positive side of the charging system. The guys called it the Big 3 wire setup, 2 more negative cables and 1 more positive cable to supplement the stock wire. Works perfectly for me with my dual electric fans running with lights and fan blower running at idle, my battery is getting 14.65 volts where before I did it was getting only 12.5 volts to the battery at idle even though the alt was trying to push the voltage to the battery, the stock wire was just way too small. Hope this helps. If you need a pic let me know and I will try to post one or send one to you.
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post #3 of 23 (permalink) Old Aug 29th, 09, 07:20 PM Thread Starter
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Chris
 
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Re: New 140 amp Alt

Chet, thank you! It makes perfect sence. Thats exactly what I will do.
Thank You!
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post #4 of 23 (permalink) Old Aug 30th, 09, 05:14 AM
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Re: New 140 amp Alt

Chris, another option is to check out www.madelectrical.com and read some of the write ups on power distribution and battery charging wire, you will get an education on proper power distibution on our old chevys. I too upgraded to a 94 amp 3-wire GM rebuilt 12si but also upgraded most of my engine harness to match the recomendations that are outlined on the madelectrical site. good luck and be safe.

68 camaro RS 327/275 THM350 4 wheel disc brake 8.5 10 bolt 3.42 daily driver
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post #5 of 23 (permalink) Old Aug 30th, 09, 11:13 AM Thread Starter
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Chris
 
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Re: New 140 amp Alt

Thank you Dan! Chet, what type of fuse did you use? 150 amp is like a flat fuse that you must use bolts and eyelets to connect? I am going to ,madeelectrical.com to learn more.
Thanks,
Chris
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post #6 of 23 (permalink) Old Aug 30th, 09, 05:58 PM
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Re: New 140 amp Alt

Chris, I bought mine from www.knukonceptz.com they are audio specialists and the part number is FH-44 Inline Waterproof mini ANL fuse holder 150amp. price 7.99 I also bought 4 RT4516R 4 AWG gold plated ring terminals @.99 ea, I got a couple extra just in case I messed one up. All the parts needed to do my car was like 23.00 shipped. I have my fans positive power coming directly from the battery per the instructions for the controller that I used to control my fans that is made by Flexalite Fans. As I said before, my cars charging system works perfectly now with no problems and plenty power to run my electrical stuff.
Chet
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post #7 of 23 (permalink) Old Aug 30th, 09, 06:55 PM Thread Starter
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Re: New 140 amp Alt

Thanks Chet! I got it.
Chris
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post #8 of 23 (permalink) Old Aug 30th, 09, 07:12 PM Thread Starter
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Re: New 140 amp Alt

Ok! one more question. What did you use to attach the fuse?
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post #9 of 23 (permalink) Old Aug 31st, 09, 08:10 AM Thread Starter
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Re: New 140 amp Alt

I bought a new gold plated terminal with an accessory add on. I will just use a stainless bolt, and shrinkwrap everything.
Common sense!
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post #10 of 23 (permalink) Old Aug 31st, 09, 11:03 AM
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Re: New 140 amp Alt

Stainless doesn't make a very good electrical connector - especially on a high current circuit. A good nickle plated bolt would be better.

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post #11 of 23 (permalink) Old Aug 31st, 09, 12:00 PM
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Re: New 140 amp Alt

ditto what Dan said above. Read everything at MAD first, you will get a good education on how to upgrade the charging system for performance and longevity. It's great info.

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post #12 of 23 (permalink) Old Aug 31st, 09, 02:46 PM Thread Starter
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Re: New 140 amp Alt

Ok!
Thank you!
Chris
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post #13 of 23 (permalink) Old Aug 31st, 09, 05:24 PM
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Re: New 140 amp Alt

Quote:
Originally Posted by hirpms View Post
Ok! one more question. What did you use to attach the fuse?
It has 2 holes in the holder for mounting and the fuse itself is self explanatory albeit it is like nothing I have ever seen myself. I connected all the positive first then the negative cable last. I drilled 2 holes in the frame rail at the top nearest to the battery.
Chet
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post #14 of 23 (permalink) Old Aug 31st, 09, 05:38 PM Thread Starter
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Re: New 140 amp Alt

Thanks Chet! You know, I think my car runs poorly when fan is running. I'm not getting
the proper voltage as needed to the MSD. That should solve the problem. With running
rad fan, trans fan, electric pump, and MSD. The 140 amp alt is being smothered. I was going to add a electric water pump. But affraid to because of overloading the system.
Chris
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post #15 of 23 (permalink) Old Sep 1st, 09, 01:04 PM
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Re: New 140 amp Alt

Chris, with proper power distribution ,wire guage, properly located fusible links, relays you could run all your stuff + AC /wipers/electric windows/defroster/power trunk lock/high beams/stereo/dvd/flatscreens ... and be reading ~14.2 volts at your MSD all day. Did you ever check out the madelectrical site?

68 camaro RS 327/275 THM350 4 wheel disc brake 8.5 10 bolt 3.42 daily driver
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