Internally regulated alternator.. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**'70_402** · 07-27-2005, 01:36 PM

What is a good year and model to get a internally regulated alternator off of? mid 80's chevy truck? just curious.

also can i just switch over to the internally regulated alt and just change the way it is wired up?

Thanks

Rick

Mad Dog · 07-27-2005, 04:12 PM

1986 chevy celebrity= 100 amp alt....but you gotta change the pulley.
1978,79 chevy truck with a 454....big alternator that pushes 140 amps....just make sure it fits

jescates · 07-27-2005, 04:24 PM

I am not sure what year mine is, I just went in and told the counter guy that I was swapping over to an internal regulated alternator and he hooked me up. Showed me the different plug that I needed. Pretty easy installation, I know there is a way to jumper the original regulator and use the existing truck wires, but since I mounted the alternator on the passenger side, I bypassed the original regulator all together. I want to say I ran a hot wire straight from the battery to the Alt. and then since I had a dummy light instead of an amp guage, I just looked up the wires in the diagrahm for the dummy light and wired it up so if something went wrong, I would get the light. I used to have a website that showed the step by step process on an early Chevelle, it's the same for our trucks. I will see if I can find it again. Good luck.

jescates · 07-27-2005, 04:29 PM

Here, check this site out. The second wiring diagram is pretty much how I set mine up and it works great!
http://www.novaresource.org/alternator.htm

phanatic32212 · 07-28-2005, 06:11 AM

I ordered this p/n from summit. SUM-811001 100 amps and bolts in original location. There is also a great write-up in the FAQ section about the wiring from external to internal reg. alternators. It took me 15 minutes max to do the whole thing.

phanatic32212 · 07-28-2005, 06:15 AM

Here's a link to the FAQ:
http://67-72chevytrucks.com/vboard/s...9&page=1&pp=25

07-27-2005, 01:36 PM	#1
'70_402 Senior Member Join Date: Dec 2003 Location: Pampa, Texas Posts: 1,553	Internally regulated alternator.. What is a good year and model to get a internally regulated alternator off of? mid 80's chevy truck? just curious. also can i just switch over to the internally regulated alt and just change the way it is wired up? Thanks Rick __________________ https://www.ebay.com/itm/29620574751...mis&media=COPY Last edited by '70_402; 07-27-2005 at 01:50 PM.

07-27-2005, 04:12 PM	#2
Mad Dog Registered User Join Date: Jun 2005 Location: Independence MO Posts: 87	1986 chevy celebrity= 100 amp alt....but you gotta change the pulley. 1978,79 chevy truck with a 454....big alternator that pushes 140 amps....just make sure it fits __________________ 72 C10 longbed 5/7 drop, Telstars, 350/th400(for now) 69 Chevelle SS396 (427/th400) 88 K5 on 35's (355/700R4/208)

07-27-2005, 04:24 PM	#3
jescates Registered User Join Date: Aug 2001 Location: Mcloud, Oklahoma Posts: 656	I am not sure what year mine is, I just went in and told the counter guy that I was swapping over to an internal regulated alternator and he hooked me up. Showed me the different plug that I needed. Pretty easy installation, I know there is a way to jumper the original regulator and use the existing truck wires, but since I mounted the alternator on the passenger side, I bypassed the original regulator all together. I want to say I ran a hot wire straight from the battery to the Alt. and then since I had a dummy light instead of an amp guage, I just looked up the wires in the diagrahm for the dummy light and wired it up so if something went wrong, I would get the light. I used to have a website that showed the step by step process on an early Chevelle, it's the same for our trucks. I will see if I can find it again. Good luck. __________________ 1970 C-10 LWB 1998 Jeep Wrangled TJ 2009 Honda VTX 1300 2013 Buick Enclave

07-27-2005, 04:29 PM	#4
jescates Registered User Join Date: Aug 2001 Location: Mcloud, Oklahoma Posts: 656	Here, check this site out. The second wiring diagram is pretty much how I set mine up and it works great! http://www.novaresource.org/alternator.htm __________________ 1970 C-10 LWB 1998 Jeep Wrangled TJ 2009 Honda VTX 1300 2013 Buick Enclave Last edited by jescates; 07-27-2005 at 04:30 PM.

07-28-2005, 06:11 AM	#5
phanatic32212 It's Done When It Runs!! Join Date: Sep 2002 Location: Jacksonville, FL (Orange Park) Posts: 220	I ordered this p/n from summit. SUM-811001 100 amps and bolts in original location. There is also a great write-up in the FAQ section about the wiring from external to internal reg. alternators. It took me 15 minutes max to do the whole thing. __________________ Or Give Me DEATH

07-28-2005, 06:15 AM	#6
phanatic32212 It's Done When It Runs!! Join Date: Sep 2002 Location: Jacksonville, FL (Orange Park) Posts: 220	Here's a link to the FAQ: http://67-72chevytrucks.com/vboard/s...9&page=1&pp=25 __________________ Or Give Me DEATH

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