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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


1977malibu classic

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Post by nowforever13 Sat Apr 26, 2014 9:06 pm

hi im new to the forum but not new to cars, ( first off id like to apologize if this is in the wrong place )my very first car was a 77' Malibu that he had owned for years but let it get run down in 99' but we rebuilt 2-3 years ago, body parts for the car are hard enough to find so anyone with a good parts link please post, also ive been looking for a wiring diagram for the car as my generator light stays on all the time and ive got little shorts in my wiring every where so i need to find one and quick lol. if somebody could help me out with that,i will provide a video of the car also so please help
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Post by 1973montec Sat Apr 26, 2014 10:12 pm

welcome
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Post by Colonnade Mattie Sat Apr 26, 2014 11:09 pm

Great car man I have one too..I don't even know if the gen light is hooked up in my rat..lol. 
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Post by thatfnthing Sun Apr 27, 2014 12:03 am

Welcome!  Take look in the Tech->Electrical section -- we've been accumulating some wiring diagrams there in a sticky.
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Post by dynchel Sun Apr 27, 2014 7:43 am

Welcome.
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Post by Joe73 Sun Apr 27, 2014 8:09 am

Welcome to the board. What mufflers are you running? Sounds good ...
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Post by Limey SE Sun Apr 27, 2014 2:42 pm

Sounds great .... looks like a great starting point for you !
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Post by Tom77 Mon Apr 28, 2014 8:09 am

Nice another 77 here. Welcome
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Post by driveit Mon Apr 28, 2014 11:58 am

Welcome, love the car!
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Post by Wallyuph Mon Apr 28, 2014 11:59 am

Welcome
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Post by pila Tue Apr 29, 2014 3:45 am

Welcome to the fun !

I've been through the scenario with the GEN light some years ago. Is your alternator charging ?
If I remember correctly, the light gets a ground through the voltage regulator in the alternator, when it's not charging. (?)







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Post by nowforever13 Mon May 05, 2014 7:29 am

To Joe73 ive got a set of true dual alumnized steel flowmasters i think they are the super 40s
And ill have to check on that gen light thing but when its on my heater fan wont work. And it usually comes on once i start the car and get it some rpms
Had the alternator checked and the guy said it runs like brand new
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Post by Joe73 Mon May 05, 2014 7:44 am

I had a feeling tbey were flowmasters. Any drone at highwayspeed? Usually alot less with full tail pipes.
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Post by nowforever13 Mon May 05, 2014 8:59 pm

pila wrote:Welcome to the fun !

I've been through the scenario with the GEN light some years ago.  Is your alternator charging ?
If I remember correctly, the light gets a ground through the voltage regulator in the alternator, when it's not charging. (?)
Good news everyone, i found one half of the problem with my gen light. it seems that my a/c wire ( i unhooked only weiners need A/c) was shorting out my fan i unpluged it also and that made my gen light dim down ALOT so now i believe there is a short inside the cab of the car and yes my alt is charging perfect. its the factory original and its also a numbers matching car






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Post by nowforever13 Mon May 05, 2014 9:03 pm

Joe73 wrote:I had a feeling tbey were flowmasters.  Any drone at highwayspeed?   Usually alot less with full tail pipes.
remember where i said it had set for a number of years? well lol... a chipmunk crawled up my pipe and dropped a steel nut in my muffler.....when its at idle and going down the highway idling you can hear the nut rattle. lol
so far as it sits i estimate it has around 280hp
so to up that here is a list of my plan
#1 electric water pump +25
#2 edelbrock e-street EFI fuel injection system +25
#3 Shorty headers +25-50
#4 Flow tech Warlock mufflers +25
-------------------------------------
= around 380 horsies that im going to smoke my uncles camaro with
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Post by pila Mon May 05, 2014 9:45 pm

Not to dwell on the GEN light issue, but I'm thinking you have a bad diode in the rectifier bridge in your alternator.  It can still charge, but likely not at full capacity, and a leaky diode may not be giving an open ground to your light, letting it be dim & not completely off.

And not to try to sell you parts . Very Happy   NPD has alternator repair kits ,for the 63 amp and the 85 amp alternators, for $24.95, which includes: bearings, brushes, springs, capacitor, diode trio, and rectifier bridge. (In their new catalog, it's item 2319 on page 126 )
 I keep one of those kits around, to keep my stuff working.



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