late style alt. hookup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bumpster · 07-10-2004, 10:44 PM

My 72 is starting to get cranky about not being my daily driver this summer. The latest tantrum has been the lights flickering bright, then dim and battery not getting charged up. Rather than replace voltage regulator {which I belive to be bad based on hitting it with a pair of pliers and watching my headlights get bright}, I have decided to go to an internal alternator. Now I can't find the note I used to have telling me how to wire it in. Anyone got this one memorized? As usual, thanks in advance

junkyardjohn · 07-10-2004, 11:11 PM

HMMMM ... SEEMS TO ME (I'M STRICKEN WITH THE DREADED C.R.S DISEASE) THAT YOUR VOLTAGE REG HAS 4 WIRES GOING INTO IT. STARTING FROM THE TOP...... JUMP #1 WITH #3 & JUMP #2 WITH #4 . I'M GOING BY MEMORY HERE, & MY MEMORY IS NOT SO PRETTY GOOD, BUT I'M PRETTY SURE THIS IS WHAT WORKS. QUICK SOMEBODY CORRECT ME IF I'M WRONG

JOHN

neonlarry · 07-10-2004, 11:25 PM

^ Looks right to me. Hook the ground wire to the alt case, get the plug for the new alt w/pigtails and wire it the same as your old one (wire colors should be the same).

ZOOMY · 07-12-2004, 12:38 AM

Just did this friday night. These guys have it right. My conversion plug had 2 wires in it. The little ( white one) wire goes to a switched 12v source.

shuttermutt · 07-12-2004, 12:48 AM

So Ol' Blue's got electrical problems now, too? Just walk over to the '67, point at it, and explain that this is what happens to trucks that don't know their place!

A.P. · 07-12-2004, 04:51 AM

Some other member posted pic while back. Hope it helps.

A.P.

07-12-2004, 12:48 AM	#5
shuttermutt Don't say "Oops!", Doctor Join Date: Nov 2003 Location: Houston, TX Posts: 677	So Ol' Blue's got electrical problems now, too? Just walk over to the '67, point at it, and explain that this is what happens to trucks that don't know their place! __________________ 'Mutt 1968 CST LWB: R.I.P. 1967 Chevelle: TPI 454 beast 1967 C10 SWB: Claimed when Bumpster didn't put it on his list

07-12-2004, 04:51 AM	#6
A.P. Black 72 Chevy Join Date: May 2002 Location: Los Angeles, California Posts: 662	Some other member posted pic while back. Hope it helps. A.P. Attached Images

07-10-2004, 10:44 PM	#1
bumpster Junior Member Join Date: Jan 2004 Location: Stillwater, Oklahoma Posts: 63	late style alt. hookup My 72 is starting to get cranky about not being my daily driver this summer. The latest tantrum has been the lights flickering bright, then dim and battery not getting charged up. Rather than replace voltage regulator {which I belive to be bad based on hitting it with a pair of pliers and watching my headlights get bright}, I have decided to go to an internal alternator. Now I can't find the note I used to have telling me how to wire it in. Anyone got this one memorized? As usual, thanks in advance __________________ 72 C10 10 yr.daily driver 68 C10 18 yr.money pit 72 Nova all original 99 H.D. Heritage[sanity check] 71 VW topless bug[summer fun] "When I have the money, I don't have the time ; when I have the time, I don't have the money.

07-10-2004, 11:11 PM	#2
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	HMMMM ... SEEMS TO ME (I'M STRICKEN WITH THE DREADED C.R.S DISEASE) THAT YOUR VOLTAGE REG HAS 4 WIRES GOING INTO IT. STARTING FROM THE TOP...... JUMP #1 WITH #3 & JUMP #2 WITH #4 . I'M GOING BY MEMORY HERE, & MY MEMORY IS NOT SO PRETTY GOOD, BUT I'M PRETTY SURE THIS IS WHAT WORKS. QUICK SOMEBODY CORRECT ME IF I'M WRONG JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

07-10-2004, 11:25 PM	#3
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	^ Looks right to me. Hook the ground wire to the alt case, get the plug for the new alt w/pigtails and wire it the same as your old one (wire colors should be the same). __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

07-12-2004, 12:38 AM	#4
ZOOMY Senior Member Join Date: Feb 2003 Location: WIS Posts: 1,752	alternator Just did this friday night. These guys have it right. My conversion plug had 2 wires in it. The little ( white one) wire goes to a switched 12v source.



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