Author Topic: 73 challenger 340 not charging.  (Read 2742 times)

Offline ammo

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73 challenger 340 not charging.
« on: February 21, 2016 - 11:23:43 AM »
Has newer alternator and new ballast resistor and voltage regulator.  One field wire on alt shows 10 volts, other field wire shows 2 volts.  Battery output lug on alternator pegs my gauge at 30 volts. But no voltage to battery..  Any help would be appreciated....    :working:   Seems like same problem I had last year when black wire of battery lug on alternator shorted on the block...   

Now following that black wire thru firewall to behind fuse box.  So far it's intact so looks like it burnt some again inside the car..  Anyone know where that wire goes after it goes thru the firewall?
« Last Edit: February 21, 2016 - 12:08:43 PM by ammo »
1973 dodge challenger




Offline 73440

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Re: 73 challenger 340 not charging.
« Reply #1 on: February 21, 2016 - 01:34:50 PM »
67 440
72 413 / 727
73 Barracuda w/ 68 440
65 Plymouth Fury III , I sold ,was my Nana's car till 92 yo.
51 Ford F1 239 Flathead, flipped , new cab , stolen
59 BelAir 283 4 door original patina
01 Chevy van 420, 520 miles
06 Crown Vic Police Interceptor
75 HD Ironhead converted to RH shift
73 HD Ironhead
82 HD Ironhead
74 Norton 850
80 HD Shovelhead
80 Husqvarna WR 390

Offline ammo

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Re: 73 challenger 340 not charging.
« Reply #2 on: February 25, 2016 - 09:02:10 AM »
http://www.mymopar.com/downloads/1973/73ChallengerA.JPG

http://www.mymopar.com/downloads/1973/73ChallengerB.JPG

Is your wiring still stock that these schematics may help ?


Thanks for the diagrams.. Appears my ammeter took a dump, bypassed it and now I'm charging again..  Any source for an ammeter replacement? Or a way to get mine rebuilt?
1973 dodge challenger

Offline brads70

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Re: 73 challenger 340 not charging.
« Reply #3 on: February 25, 2016 - 03:54:23 PM »
Thanks for the diagrams.. Appears my ammeter took a dump, bypassed it and now I'm charging again..  Any source for an ammeter replacement? Or a way to get mine rebuilt?


I have a 70 version if your stuck? ( standard cluster not rally)  Is your a rally dash?
Here is one on ebay?
http://www.ebay.ca/itm/1970-1971-1972-1973-1974-Dodge-Challenger-Plymouth-Barracuda-Amp-/201436024135?hash=item2ee685cd47:g:KT4AAOSwWnFWA3d5&vxp=mtr
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
 My handling upgrade post
http://www.cuda-challenger.com/cc/index.php?topic=73985.0

Offline roadman5312

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Re: 73 challenger 340 not charging.
« Reply #4 on: February 25, 2016 - 04:39:40 PM »
Thanks for the diagrams.. Appears my ammeter took a dump, bypassed it and now I'm charging again..  Any source for an ammeter replacement? Or a way to get mine rebuilt?
                            Personally I would leave it bypassed and use a volt meter.    :2cents:

Offline 73440

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Re: 73 challenger 340 not charging.
« Reply #5 on: February 25, 2016 - 09:32:57 PM »
Good article about bypassing the amp gauge.

http://www.madelectrical.com/electricaltech/amp-gauges.shtml
67 440
72 413 / 727
73 Barracuda w/ 68 440
65 Plymouth Fury III , I sold ,was my Nana's car till 92 yo.
51 Ford F1 239 Flathead, flipped , new cab , stolen
59 BelAir 283 4 door original patina
01 Chevy van 420, 520 miles
06 Crown Vic Police Interceptor
75 HD Ironhead converted to RH shift
73 HD Ironhead
82 HD Ironhead
74 Norton 850
80 HD Shovelhead
80 Husqvarna WR 390

Offline 734406pk

  • Andy
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Re: 73 challenger 340 not charging.
« Reply #6 on: February 26, 2016 - 12:39:14 AM »
 :iagree: forget the ammeter and do the bypass. use a volt meter instead, it is much easier and safe!
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive