The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Electrical

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-01-2019, 08:39 PM   #1
dennislbrooks
We can make that

 
dennislbrooks's Avatar
 
Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,449
80 amp relay on 1 wire alternator

Has anyone used a 5 pin 80 amp relay to break the one wire alternator connection to the battery when the car ignition is Off?

I have a one wire 60 amp alternator 10si on my 59 GMC. I go 3 wire alternators now.
__________________
1942 Chevy 1/2 ton Rod, 1946 Chevy 3/4 ton, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1970 Olds 442, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T

Last edited by dennislbrooks; 12-01-2019 at 08:41 PM. Reason: words
dennislbrooks is offline   Reply With Quote
Old 12-03-2019, 06:02 AM   #2
SunSoaked
Senior Member
 
SunSoaked's Avatar
 
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,210
Re: 80 amp relay on 1 wire alternator

Curious what the purpose would be?
SunSoaked is offline   Reply With Quote
Old 12-03-2019, 09:57 AM   #3
dennislbrooks
We can make that

 
dennislbrooks's Avatar
 
Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,449
Re: 80 amp relay on 1 wire alternator

to kill the 35 milliamp continuous draw when ignition off
__________________
1942 Chevy 1/2 ton Rod, 1946 Chevy 3/4 ton, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1970 Olds 442, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T

Last edited by dennislbrooks; 12-03-2019 at 09:59 AM. Reason: words
dennislbrooks is offline   Reply With Quote
Old 12-03-2019, 10:08 AM   #4
SunSoaked
Senior Member
 
SunSoaked's Avatar
 
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,210
Re: 80 amp relay on 1 wire alternator

Is this a common problem to all one wire alts? So, is there a module (Exciter) inside the alt that pulls this small current? I've never heard this. I never liked the 1-wire I had cause of having to rev the engine once to excite it. I ended up tossing it in the trash. Went CS 130 and never looked back.
SunSoaked is offline   Reply With Quote
Old 12-03-2019, 10:24 AM   #5
dennislbrooks
We can make that

 
dennislbrooks's Avatar
 
Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,449
Re: 80 amp relay on 1 wire alternator

As I understand yes, one wires will pull .003 amps or less with alt hooked up, key off, measuring from battery negative to positive cable off battery. And that is for a good one.

I agree going forward I only get 12si's or better with 3 wires controlled with ignition switch.

I will try the relay and let you know just for grins.
__________________
1942 Chevy 1/2 ton Rod, 1946 Chevy 3/4 ton, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1970 Olds 442, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T

Last edited by dennislbrooks; 12-03-2019 at 10:31 AM.
dennislbrooks is offline   Reply With Quote
Old 12-03-2019, 10:37 AM   #6
Andy4639
Orignal Goof member
 
Andy4639's Avatar
 
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 17,879
Question Re: 80 amp relay on 1 wire alternator

That would take a very long time to kill a good battery for normal use though. if you let it sit more than you drive it then why not just put a trickle charger on it and call it good. Better yet go back to the 3 wire setup which is better anyway.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
Seeing the USA in a 71


Upstate SC GM Truck Club
2013,14 and 2016 Hot Rod Pour Tour


http://upstategmtrucks.com/



Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
Andy4639 is offline   Reply With Quote
Old 12-03-2019, 11:09 AM   #7
dennislbrooks
We can make that

 
dennislbrooks's Avatar
 
Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,449
Re: 80 amp relay on 1 wire alternator

I won't argue that, but I have a 1 wire that I will use until it dies.
__________________
1942 Chevy 1/2 ton Rod, 1946 Chevy 3/4 ton, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1970 Olds 442, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T

Last edited by dennislbrooks; 12-03-2019 at 02:19 PM. Reason: words
dennislbrooks is offline   Reply With Quote
Old 12-03-2019, 12:05 PM   #8
vince1
Registered User
 
Join Date: Jan 2013
Location: Calgary Alberta
Posts: 889
Re: 80 amp relay on 1 wire alternator

I would only alter the wiring with relays for more important stuff like headlights or electric fans. Why not just put it on a trickle charger if the vehicle is not being used for a while? I've got the same problem BTW with a small drain that I think is coming from the newer style radio.
vince1 is offline   Reply With Quote
Old 12-03-2019, 02:18 PM   #9
dennislbrooks
We can make that

 
dennislbrooks's Avatar
 
Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,449
Re: 80 amp relay on 1 wire alternator

I know that some radios have memory and will have a slight draw. Same with security type items. And I do run trickle chargers. This is the only 10si I have and because the alternator has no memory to keep voltage on, I will kill it with key off. Relays are somewhat cheap.


I thank you guys for your input.
__________________
1942 Chevy 1/2 ton Rod, 1946 Chevy 3/4 ton, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1970 Olds 442, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T
dennislbrooks is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:19 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com