voltage reg, stay external or go internal? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71Rat · 05-12-2005, 08:58 AM

ok well a couple months ago my voltage reg went bad... A/C Delco regulator, so i got a new one. china cr@&, well start the truck up and go out for a drive, everything seems to work out untill about 10 miles from home it starts charging at 18 volts, if i let it go back down to idle it would charge at 12 (or not charge because it would be battery voltage at that)... so i tryed to limp home with it and by the time i got home battery all over inner fender and everything. So i was thinking should i convert over to a one(or 3 wire) wire and get rid of the external reg or just try and find me a a/c delco reg?

if i went to a internal reg. how do i wire that up?

Sorry for being sooo long

Rat

whitesswj · 05-12-2005, 09:12 AM

i went to internal due to the fact that my previous 68 had external and i had one heck of a time trying to trace the problem down when the battery quit taking a charge. wound up replacing both when i didn't need to. So on my new 68 i went internal. 2 weeks after install it went bad. only one thing to test and replace. boom done! My .02

sswj

Big69C20 Toy · 05-12-2005, 09:32 AM

i'd say go to a nice newer series 3-wire www.madelectrical.com and read some articles they've got... definately gave me some new perspectives

Woody · 05-12-2005, 09:36 AM

The biggest reason to go with an internal reg is they are electronic instead of mechanical. This gets rid of the flickering headlights and other problems associated with the old mech. regs.

71Rat · 05-12-2005, 01:12 PM

i knew about most of the advantages of the 3 wire or 1 wire over the external...

Big69c20 thanks for that link it helped out

looks like once i get some money in i can get my truck back on the road, thanks everyone

Rat

72BLAZERDUDE · 05-12-2005, 01:30 PM

I am using one from an 85 Trans Am in my 72. It is also 108 amp.

**VetteVet** · 05-12-2005, 03:44 PM

Here is something to think about. If you have a high amp draw system you should convert to the internal regulated alternator, but for 9.95 for an external regulator that has no points. If the rest of the system is good--Welll. I have no experience with these units so I can't verify their durability so maybe someone on the board can expound on them.
Click on electrical systems and go to page two.
http://www.jcwhitney.com/autoparts/P...p-1996/c-10101

rabbitjaws67 · 05-14-2005, 10:18 PM

I had the same prob.with reg. bought 3 at advanced auto , they were point style .Then I went napa and got a solid state With no moving parts fixed my prob , good luck

71Rat · 05-15-2005, 01:45 PM

well i just broke down and got another external from napa, seems to work fine now... hopefully i dont have anymore problems because i cant afford much more right now..... college student + working on old trucks= one poor ars kid

Thanks everyone for the help i will keep it all in mind in the future if i need another or if i swap over to internal

Rat

mvpco · 05-15-2005, 03:35 PM

I have a ?, Mine is a 72, I went to internal and started charging at about 18 volts, it went bad, I put another one on and it charges fine, but..... when I hook the wire from the junction block on passenger fender to positive on battery, there is a slight spark, when I leave it hooked up the battery goes dead by next morning, I looked a schematic and it(wire on junction block) goes to regulator. I did the conversion as described in an earlier post.

Should there be a spark when I hook the wire from junction block on fender to positive on battery?

I am using a Autozone DL7133 Altenator

Jeff Smith
Pensacola, FL
http://www.mvpc.com/1972chevy.htm

71Rat · 05-15-2005, 04:35 PM

that wire goes to a fuseable link.. that supplies all the power to everything else on your truck excpet your starter. you must have a drain somewere along the line or a short... time to start pulling fuses and see what the drain is from..... hook a test light in series with that wire to the battery, start pulling fuses, when the light goes out you have found the area of the problem. I dont think there should be a spark, but then again when i hook mine up it does spark and my radio lights for a second then goes off, kinda uses some power to save the presets or something like that.

hope that helps some
Rat

toddtheodd · 05-15-2005, 04:42 PM

Don't forget to check the faq.
Todd

05-12-2005, 08:58 AM	#1
71Rat ran out of money Join Date: Apr 2003 Location: northern, NJ Posts: 925	voltage reg, stay external or go internal? ok well a couple months ago my voltage reg went bad... A/C Delco regulator, so i got a new one. china cr@&, well start the truck up and go out for a drive, everything seems to work out untill about 10 miles from home it starts charging at 18 volts, if i let it go back down to idle it would charge at 12 (or not charge because it would be battery voltage at that)... so i tryed to limp home with it and by the time i got home battery all over inner fender and everything. So i was thinking should i convert over to a one(or 3 wire) wire and get rid of the external reg or just try and find me a a/c delco reg? if i went to a internal reg. how do i wire that up? Sorry for being sooo long Rat __________________ Modify everything, leave nothing alone!~

05-12-2005, 09:12 AM	#2
whitesswj Embrace the Redneck Join Date: Jan 2004 Location: Cabot, AR Posts: 1,334	i went to internal due to the fact that my previous 68 had external and i had one heck of a time trying to trace the problem down when the battery quit taking a charge. wound up replacing both when i didn't need to. So on my new 68 i went internal. 2 weeks after install it went bad. only one thing to test and replace. boom done! My .02 sswj __________________ '01 Camaro *Son, you just can't get there from here...*

05-12-2005, 09:32 AM	#3
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	i'd say go to a nice newer series 3-wire www.madelectrical.com and read some articles they've got... definately gave me some new perspectives __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

05-12-2005, 01:12 PM	#5
71Rat ran out of money Join Date: Apr 2003 Location: northern, NJ Posts: 925	i knew about most of the advantages of the 3 wire or 1 wire over the external... Big69c20 thanks for that link it helped out looks like once i get some money in i can get my truck back on the road, thanks everyone Rat __________________ Modify everything, leave nothing alone!~

05-12-2005, 01:30 PM	#6
72BLAZERDUDE Registered User Join Date: Jan 2002 Location: WATAUGA,TX Posts: 675	I am using one from an 85 Trans Am in my 72. It is also 108 amp. __________________ 72 2wd 307/AT/AC/TILT WHEEL 78 JIMMY HIGH SIERRA

05-12-2005, 09:36 AM	#4
Woody Registered User Join Date: Feb 2000 Location: Georgetown, KY, USA Posts: 631	The biggest reason to go with an internal reg is they are electronic instead of mechanical. This gets rid of the flickering headlights and other problems associated with the old mech. regs.

05-12-2005, 03:44 PM	#7
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	regulator Here is something to think about. If you have a high amp draw system you should convert to the internal regulated alternator, but for 9.95 for an external regulator that has no points. If the rest of the system is good--Welll. I have no experience with these units so I can't verify their durability so maybe someone on the board can expound on them. Click on electrical systems and go to page two. http://www.jcwhitney.com/autoparts/P...p-1996/c-10101 __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

05-14-2005, 10:18 PM	#8
rabbitjaws67 still plays with trucks Join Date: May 2005 Location: lancaster s.c. Posts: 37	I had the same prob.with reg. bought 3 at advanced auto , they were point style .Then I went napa and got a solid state With no moving parts fixed my prob , good luck

05-15-2005, 01:45 PM	#9
71Rat ran out of money Join Date: Apr 2003 Location: northern, NJ Posts: 925	well i just broke down and got another external from napa, seems to work fine now... hopefully i dont have anymore problems because i cant afford much more right now..... college student + working on old trucks= one poor ars kid Thanks everyone for the help i will keep it all in mind in the future if i need another or if i swap over to internal Rat __________________ Modify everything, leave nothing alone!~

05-15-2005, 03:35 PM	#10
mvpco Registered User Join Date: Apr 2005 Location: Pensacola, FL Posts: 400	Internal Reg I have a ?, Mine is a 72, I went to internal and started charging at about 18 volts, it went bad, I put another one on and it charges fine, but..... when I hook the wire from the junction block on passenger fender to positive on battery, there is a slight spark, when I leave it hooked up the battery goes dead by next morning, I looked a schematic and it(wire on junction block) goes to regulator. I did the conversion as described in an earlier post. Should there be a spark when I hook the wire from junction block on fender to positive on battery? I am using a Autozone DL7133 Altenator Jeff Smith Pensacola, FL http://www.mvpc.com/1972chevy.htm

05-15-2005, 04:35 PM	#11
71Rat ran out of money Join Date: Apr 2003 Location: northern, NJ Posts: 925	that wire goes to a fuseable link.. that supplies all the power to everything else on your truck excpet your starter. you must have a drain somewere along the line or a short... time to start pulling fuses and see what the drain is from..... hook a test light in series with that wire to the battery, start pulling fuses, when the light goes out you have found the area of the problem. I dont think there should be a spark, but then again when i hook mine up it does spark and my radio lights for a second then goes off, kinda uses some power to save the presets or something like that. hope that helps some Rat __________________ Modify everything, leave nothing alone!~

05-15-2005, 04:42 PM	#12
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	Don't forget to check the faq. Todd __________________ "The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY???



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