Hook up the Gen. Light? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67chevemall · 01-02-2006, 01:17 PM

Howdy!

I want to hook up the Gen. Light to work beside the
Battery gauge.(they both have benifits I find)

Looking at the wiring blueprint the Gen light works
from a 16/20 gauge BRN wire from the volt Reg.
to the bulb on the cluster?

Can I just hook a bulb up with the + going to the
brn on the Volt Reg. and the - grounded??

Cheers and Thanks!

Longhorn Man · 01-02-2006, 01:25 PM

You'll need a positive wire on both ends of the bulb, but honestly I can't remember exactly how it goes.

67chevemall · 01-02-2006, 03:24 PM

On the printed cirsut it is + brown and - in grounded.

Something in the volt reg must send + when the Alt stops????

BubbaGreen · 01-02-2006, 05:24 PM

to make it effective...you need:
[IGN +12V] --> [bulb] --> [alt]
If the alternator fails, it grounds itself turning on the light.
You need the 12V from an ignition source or you wont be able to turn off your engine with the key as the alternator will always be "excited"
This set up is for a new style 3-wire alternator.
check out www.madelectrical.com for better info and diagrams.

67chevemall · 01-03-2006, 05:14 PM

I have the 3 wire alt.
Not sure where to run the wires??

67chevemall · 01-04-2006, 02:02 PM

t
t
t

68speedalert · 01-04-2006, 02:20 PM

I assume you mean the internal regulator GM style.

If you don't have a 2 wire connector for the regulator you can buy one at NAPA. The larger red wire goes straight to the stud that the battery feed wire goes to. the smaller white wire goes to the bulb. The bulb will need 12V KO on one side, the other side goes to the white wire of the reg. With KOEO, the reg is grounded and the gen light will illuminate. KOER, the white wire is not grounded (as long as the alt. is working) and the gen light is off.

I'll bet the origional system worked the same. If you have a wiring schematic and trace it down, you can tap off the OEM wiring at the old regulator.

sneakysnake · 01-04-2006, 02:53 PM

a pic

68speedalert · 01-04-2006, 05:22 PM

VERY nice!!!!!

67chevemall · 01-07-2006, 02:16 PM

so the switch in the dia. would be the volt reg.?

jhow66 · 01-07-2006, 05:39 PM

Quote:

Originally Posted by 67chevemall

so the switch in the dia. would be the volt reg.?

No. Ing. switch.

67chevemall · 01-08-2006, 07:07 AM

Roger. Thanks guys
you rock.....

01-02-2006, 01:17 PM	#1
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Hook up the Gen. Light? Howdy! I want to hook up the Gen. Light to work beside the Battery gauge.(they both have benifits I find) Looking at the wiring blueprint the Gen light works from a 16/20 gauge BRN wire from the volt Reg. to the bulb on the cluster? Can I just hook a bulb up with the + going to the brn on the Volt Reg. and the - grounded?? Cheers and Thanks! __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

01-02-2006, 01:25 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Hook up the Gen. Light? You'll need a positive wire on both ends of the bulb, but honestly I can't remember exactly how it goes.

01-02-2006, 03:24 PM	#3
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: Hook up the Gen. Light? On the printed cirsut it is + brown and - in grounded. Something in the volt reg must send + when the Alt stops????

01-02-2006, 05:24 PM	#4
BubbaGreen Senior Member Join Date: Mar 2001 Location: Cedar Park, TX Posts: 686	Re: Hook up the Gen. Light? to make it effective...you need: [IGN +12V] --> [bulb] --> [alt] If the alternator fails, it grounds itself turning on the light. You need the 12V from an ignition source or you wont be able to turn off your engine with the key as the alternator will always be "excited" This set up is for a new style 3-wire alternator. check out www.madelectrical.com for better info and diagrams. __________________ 71 Chevy C-10 SWB Fleetside RamJet-350/4L60e & Compushift/3.73Posi See it at www.prismnet.com/~grzanich

01-03-2006, 05:14 PM	#5
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: Hook up the Gen. Light? I have the 3 wire alt. Not sure where to run the wires??

01-04-2006, 02:02 PM	#6
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: Hook up the Gen. Light? t t t

01-04-2006, 02:20 PM	#7
68speedalert Semi-Senior Member Join Date: Feb 2003 Location: Washington, MO Posts: 390	Re: Hook up the Gen. Light? I assume you mean the internal regulator GM style. If you don't have a 2 wire connector for the regulator you can buy one at NAPA. The larger red wire goes straight to the stud that the battery feed wire goes to. the smaller white wire goes to the bulb. The bulb will need 12V KO on one side, the other side goes to the white wire of the reg. With KOEO, the reg is grounded and the gen light will illuminate. KOER, the white wire is not grounded (as long as the alt. is working) and the gen light is off. I'll bet the origional system worked the same. If you have a wiring schematic and trace it down, you can tap off the OEM wiring at the old regulator. __________________ '68 50th Anniversery LWB Custom Fleetside, '77 305 v-8, turbo 350, factory speed alert (still works), '71 drivetrain w/front discs. Some call it ugly yellow, others call it Ochre '83 Jeep CJ-7, <80,000 miles, original owner '04 Chevy Suburban, 4x4, 2500, 6.0 ltr, Predator Diablo programmer '95 GMC K1500 Extended cab Last edited by 68speedalert; 01-04-2006 at 02:52 PM.

01-04-2006, 02:53 PM	#8
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: Hook up the Gen. Light? a pic Attached Images

01-04-2006, 05:22 PM	#9
68speedalert Semi-Senior Member Join Date: Feb 2003 Location: Washington, MO Posts: 390	Re: Hook up the Gen. Light? VERY nice!!!!! __________________ '68 50th Anniversery LWB Custom Fleetside, '77 305 v-8, turbo 350, factory speed alert (still works), '71 drivetrain w/front discs. Some call it ugly yellow, others call it Ochre '83 Jeep CJ-7, <80,000 miles, original owner '04 Chevy Suburban, 4x4, 2500, 6.0 ltr, Predator Diablo programmer '95 GMC K1500 Extended cab

01-07-2006, 02:16 PM	#10
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: Hook up the Gen. Light? so the switch in the dia. would be the volt reg.? __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

01-08-2006, 07:07 AM	#12
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: Hook up the Gen. Light? Roger. Thanks guys you rock.....

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