Generator light on with key in accessory position - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Sport/Truck · 04-05-2009, 10:04 PM

Like the title says when I put my key on accessory position the idiot light is lit.
I'm not sure what this means, I don't think it's supposed to be on. Can someone confirm this?.
s/t

Green Machine · 04-06-2009, 10:11 AM

Might want to ask a moderator to move this to the electical section, to get a better answer, but I think that is normal for the light to be on in the acc position.

Blue71LWB · 04-06-2009, 10:20 AM

I also think it is normal. Mine is the same./

Sport/Truck · 04-06-2009, 10:27 AM

Quote:

Originally Posted by Blue71LWB

I also think it is normal. Mine is the same./

Does it also light in the run position? Mine doesn’t, only the oil light.
s/t

project1971 · 04-06-2009, 10:26 AM

it is normal all vehicles do it even the new ones.

Sport/Truck · 04-06-2009, 10:28 AM

Quote:

Originally Posted by project1971

it is normal all vehicles do it even the new ones.

I think they only do it in the run position before you start it. (To check the light operation).
s/t

project1971 · 04-06-2009, 10:35 AM

ahhh good point i just kinda skimmed the post. Mine isn't running or together at this point to check. Maybe his ign switch is boogered i don't think it should be on in acc but should be on in the run position for prove out.

cdowns · 04-06-2009, 10:59 AM

normal to have light on in acc position // just the dummy light telling you it aint charging the battery

Sport/Truck · 04-06-2009, 04:15 PM

So far the sensuous says it’s normal. I just cant figure out why it wouldn’t also be on in the run position??
s/t

19GMC63 · 04-06-2009, 08:13 PM

because it only comes on when the battery isn't charging.

fixit-p · 04-06-2009, 09:26 PM

With the key in the run position and the engine not running the light should be on if not check to see if any other accesories are also off such as wipers and blower if so you may have problem w/ iggy sw.

Sport/Truck · 04-06-2009, 10:34 PM

I just checked, In the run position everything works. Lights (inside & out) fan, wipers, radio & only the oil light is on in this position.

s/t

*72lb4x4* · 04-06-2009, 11:58 PM

Be happy. My starter turns with the key in the acc position.

Sport/Truck · 04-07-2009, 06:48 AM

Quote:

Originally Posted by 72lb4x4

Be happy. My starter turns with the key in the acc position.

Seems like it would make it some what theft Proof.

s/t

fixit-p · 04-07-2009, 11:06 AM

s/t have you checked your alt to verify that it's putting out with engine running the alt light is what supplies your alternators feild current to get it started once it starts putting out current the light goes out because there is 12v (nom) positive voltage at both ends of the light. Are there any mods to your charging system. since the light comes on in acc pos it shows that if is flowing to ground so it is possibly not getting power in run pos.

04-05-2009, 10:04 PM	#1
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Generator light on with key in accessory position Like the title says when I put my key on accessory position the idiot light is lit. I'm not sure what this means, I don't think it's supposed to be on. Can someone confirm this?. s/t __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

04-06-2009, 10:11 AM	#2
Green Machine Senior Member Join Date: Jul 2004 Location: Estherville, Iowa Posts: 3,371	Re: Generator light on with key in accessory position Might want to ask a moderator to move this to the electical section, to get a better answer, but I think that is normal for the light to be on in the acc position. __________________ 1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0

04-06-2009, 10:20 AM	#3
Blue71LWB Registered User Join Date: Nov 2006 Location: Alabama Posts: 120	Re: Generator light on with key in accessory position I also think it is normal. Mine is the same./ __________________ Working on my first 1,000 post. I'm sure I'll get there before this project is over .

04-06-2009, 10:26 AM	#5
project1971 Registered User Join Date: Apr 2003 Location: Oklahoma City Posts: 605	Re: Generator light on with key in accessory position it is normal all vehicles do it even the new ones. __________________ 2008 Ford FX2 Screw 1971 C10 project in shop now! 2004 Pontiac Grandam (wifes) 2000 Cavalier z24 (gas saver)

04-06-2009, 10:35 AM	#7
project1971 Registered User Join Date: Apr 2003 Location: Oklahoma City Posts: 605	Re: Generator light on with key in accessory position ahhh good point i just kinda skimmed the post. Mine isn't running or together at this point to check. Maybe his ign switch is boogered i don't think it should be on in acc but should be on in the run position for prove out. __________________ 2008 Ford FX2 Screw 1971 C10 project in shop now! 2004 Pontiac Grandam (wifes) 2000 Cavalier z24 (gas saver)

04-06-2009, 10:59 AM	#8
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Generator light on with key in accessory position normal to have light on in acc position // just the dummy light telling you it aint charging the battery __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

04-06-2009, 04:15 PM	#9
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Re: Generator light on with key in accessory position So far the sensuous says it’s normal. I just cant figure out why it wouldn’t also be on in the run position?? s/t __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

04-06-2009, 08:13 PM	#10
19GMC63 Registered User Join Date: Nov 2006 Location: Nashville, TN Posts: 1,510	Re: Generator light on with key in accessory position because it only comes on when the battery isn't charging.

04-06-2009, 09:26 PM	#11
fixit-p Registered User Join Date: Dec 2008 Location: Yay Area CA Posts: 2,329	Re: Generator light on with key in accessory position With the key in the run position and the engine not running the light should be on if not check to see if any other accesories are also off such as wipers and blower if so you may have problem w/ iggy sw.

04-06-2009, 10:34 PM	#12
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Re: Generator light on with key in accessory position I just checked, In the run position everything works. Lights (inside & out) fan, wipers, radio & only the oil light is on in this position. s/t __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

04-06-2009, 11:58 PM	#13
72lb4x4 Account Suspended Join Date: Jul 2006 Location: DFW Posts: 1,427	Re: Generator light on with key in accessory position Be happy. My starter turns with the key in the acc position.

04-07-2009, 11:06 AM	#15
fixit-p Registered User Join Date: Dec 2008 Location: Yay Area CA Posts: 2,329	Re: Generator light on with key in accessory position s/t have you checked your alt to verify that it's putting out with engine running the alt light is what supplies your alternators feild current to get it started once it starts putting out current the light goes out because there is 12v (nom) positive voltage at both ends of the light. Are there any mods to your charging system. since the light comes on in acc pos it shows that if is flowing to ground so it is possibly not getting power in run pos.

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