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#1 |
Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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2 people have showed me on their trucks, but does anyone have a pic of how to wire the newer style alternator? (and instructions of how to do it) (not the 1 wire kind).
Also, I can get a used one for free, should I just try it and see if it works, or should I have it rebuilt or get a new one? The car that it's in hasn't run for a long time, but when it did the alternator worked.
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#2 |
Back in the sticks
Join Date: Jan 2001
Location: Fordland, MO
Posts: 3,188
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Go to any parts store and buy one that is new or rebuilt. They run around $30. Take the old one in as a core. For wiring, do a search of the topic "alternator swap" and it will pull up about 20 different strings about just this. Jeff.
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1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty |
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#3 |
440 american Horses
Join Date: Mar 2001
Location: Anoka, MN USA
Posts: 470
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Here's a picture of the wiring conversion that was posted a while back, I forget who by.
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Seth Petro 1969 Chev Short Step 425hp 350, TH400, big tires, fast truck 1979 Pontiac Trans Am 1991 Saturn SL1 - gas mileage! (and free) 1977 Buick LeSabre - for sale May America bless God, and may God bless America ![]() |
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#4 |
Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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Thanks for the pic, I saved it so now I will have it. Does anyone have the instructions of how to do it though? I just did a search for alternator swap, and I couldn't find anything that made any sense.
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![]() ![]() 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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#5 |
440 american Horses
Join Date: Mar 2001
Location: Anoka, MN USA
Posts: 470
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I'll check the manuals at work and figure out exactly which wire goes where on the alternator and try to get back to ya tonight.
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Seth Petro 1969 Chev Short Step 425hp 350, TH400, big tires, fast truck 1979 Pontiac Trans Am 1991 Saturn SL1 - gas mileage! (and free) 1977 Buick LeSabre - for sale May America bless God, and may God bless America ![]() |
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#6 |
Registered User
Join Date: Sep 2001
Location: central Ill. USA
Posts: 447
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Mines a '69 but should be same wire colors. White and dark blue are internal now so throw them away. Red is battery. Brown goes thru firewall to ignition and into steering column (I guess for flashers). Black of course is ground. Hope this helps.
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69 C10 longbed: 357c.i. /TH400/3.73s/AC/ beige primer/saving $ for paint ______________________________ |
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#7 |
440 american Horses
Join Date: Mar 2001
Location: Anoka, MN USA
Posts: 470
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Ok, connections at the alternator:
Dark Blue: number 2 terminal on Alternator White: number 1 terminal on alternator Red: Battery terminal on Alternator Black: ground Those are the wire connections on the newer internal reg'd alternator. CS model I believe (?) Those connections will keep the alternator working good and also keep the Alternator light on the dash functional.
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Seth Petro 1969 Chev Short Step 425hp 350, TH400, big tires, fast truck 1979 Pontiac Trans Am 1991 Saturn SL1 - gas mileage! (and free) 1977 Buick LeSabre - for sale May America bless God, and may God bless America ![]() |
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#8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Yeah, you don't want to delete any wires...just re-arange them a little.
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#9 |
Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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Ok, I think that makes a little more sense now. I think I will just go ahead and try it, and I will ask if I have any more questions.
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![]() ![]() 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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#10 |
Registered User
Join Date: Sep 2001
Location: central Ill. USA
Posts: 447
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If you install a new style alternator and do it right, the old regulator and at least 1 wire will be in the garbage can. Theres no need to have the old regulator on the truck anymore with jumpers on it. Hot-rod magazines have articles on how to do it frequently.
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69 C10 longbed: 357c.i. /TH400/3.73s/AC/ beige primer/saving $ for paint ______________________________ |
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#11 |
"Trucks with Class"
![]() Join Date: Jul 2000
Location: OLYMPIA, WA, USA
Posts: 8,131
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Plug it & go
M&H makes a neat little kit with the connectors all covered in a rubber case. Plug it into the harness that comes off the regulator and plug another onto the harness that goes into the alt...no cutting, crimping or colors to worry about. About $20 for all.
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#12 |
GYRO GEARLOOSE
Join Date: Jun 2000
Location: Nevada City, CAEverett, WA
Posts: 361
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Why get a a new alternator? They either work or don't. Put the free on in, if it does not work, you are out 10 minutes time, if you take the attitude that everything you put into your truck has to be perfect, you'll wind up with a $20,000 old truck instead of a $2,000 old truck
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Nevada City, CA Everett, Washington 57 3/4 rat, 235, 3spd 66 C-10 Panel, SWB. 350 from '68, 200R4 tranny, 3.07 rear ratio, restoring 68 C10 LWB 350 4spd, 4.56 rear dump runner 82 Camaro, 305, THM-200-R4 84 Monte Carlo 305 TH350, land tuna 85 Tercel SW, snow runner DISGRACED OUTLAW MEMBER OF THE DRUM BRAKE CLUB |
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#13 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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I found mine in the trunk of an abondoned Nova. Workin fine.
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#14 |
Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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I agree about using the old alternator. There is some stuff that I will buy the best I can afford, but other stuff it either works or it doesn't.
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#15 |
Registered User
Join Date: Mar 2002
Location: Bondurant, IA but in Worcester, MA for school
Posts: 767
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Blackhawkdc - so basically what you are saying is that if I replace my externally regulated alternator with an internal regulated alternator all I need to do is rearanged the wires like you said and im done? I dont have to mess with the 12v the alt. need to make power and run a wire to the ignition switch and what not? Thanks
HotRod
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1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/ |
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#16 |
Registered User
![]() Join Date: Nov 2002
Location: Lebanon, Tennessee
Posts: 1,372
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Alternators for our old trucks turn up in the strangest places.
I was at one of those little mini-markets getting gas, when this guy walks up to me and says that he used to have one of these old trucks and wanted to know if I wanted a spare alternator for it. Of course I said, "yeah!" He walks back over to his car and brings one back to me. It was, in fact, the right one. Ya just never know... Now, that said, my '67 has a new one-wire alternator. They are available in the aftermarket rated up to something like 120 amps. If you have an A/C system, hot ignition, honkin' stereo, electric fuel pump, high powered head lights, etc., then a higher powered alternator is a better alternative than the old ones. ![]() Jeff
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Jeff '67 short Fleet; my ongoing project. '66 long Fleet; my original "baby." Live life or bust trying. |
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#17 | |
440 american Horses
Join Date: Mar 2001
Location: Anoka, MN USA
Posts: 470
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Quote:
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Seth Petro 1969 Chev Short Step 425hp 350, TH400, big tires, fast truck 1979 Pontiac Trans Am 1991 Saturn SL1 - gas mileage! (and free) 1977 Buick LeSabre - for sale May America bless God, and may God bless America ![]() |
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#18 |
Registered User
Join Date: Mar 2002
Location: Bondurant, IA but in Worcester, MA for school
Posts: 767
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Blackhawkdc - I have a 135 amp internally regulated alternator that I would like to replace my externally regulated 35 amp alternator. Now will the wireing that is there be able to handle this alternator or am I gonna have a good smoke show on my hands?
HotRod
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1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/ |
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#19 | |
440 american Horses
Join Date: Mar 2001
Location: Anoka, MN USA
Posts: 470
|
Quote:
__________________
Seth Petro 1969 Chev Short Step 425hp 350, TH400, big tires, fast truck 1979 Pontiac Trans Am 1991 Saturn SL1 - gas mileage! (and free) 1977 Buick LeSabre - for sale May America bless God, and may God bless America ![]() |
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#20 |
Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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An alternator out of a 77 Monte Carlo will be ok with the stock wires, right?
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#21 | |
440 american Horses
Join Date: Mar 2001
Location: Anoka, MN USA
Posts: 470
|
Quote:
__________________
Seth Petro 1969 Chev Short Step 425hp 350, TH400, big tires, fast truck 1979 Pontiac Trans Am 1991 Saturn SL1 - gas mileage! (and free) 1977 Buick LeSabre - for sale May America bless God, and may God bless America ![]() |
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#22 |
Registered User
Join Date: Mar 2002
Location: Bondurant, IA but in Worcester, MA for school
Posts: 767
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Yea just got back from HomeDepot with 10 feet of 4 gauge wire for my alternator...i figured that would make it one less thing to worry about melting on the truck
![]() HotRod
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1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/ |
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#23 |
Registered User
Join Date: Feb 2002
Location: Moore OK 73160
Posts: 974
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I just done the internal regulator alternator swap. I ran a new wire from the battery post on the alt to the junction block on the fender. I done away with all of the wiring for the exteranl regulator. you don't need it plus it puts moreresistance in the system and you don't reap the full benefits of the new alt. Run the brown wire directly to the white wire for the new connector. run the red wire to the battery post on the alt and you are all done. the wire that runs to the battery junction block is 10 gauge. i got a 63 amp alt. the same amp alt as my old ext reg unit when i hooked it up through th ext reg harness, i wasn't getting any charge to the battery. so i did it this way, and it runs much better. i ran a search on the board for alternator and found the conversion in both configurations.
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