WANTED: Dual Battery Isolator & Harness - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Steve @ BROTHERS · 12-10-2003, 10:43 PM

We (me) are working on a 1970 4x4 that came from the factory with a dual battey option. Unfortaunately, the original owner modified the harness and changed the isolator. We need the original isolator and harness for our project. If anyone can help, please contact me at our office by email or phone. Thanks in advance!!!

PS - There is a good chance that BROTHERS will be reproducing an original style dual battery kit so trucks not originally equipped can be converted. We will keep you posted on the status of this kit should we decide for sure to go forward with it.

**Classic Heartbeat** · 12-10-2003, 11:07 PM

Hmmmmm, I wonder if I should tell JC that I have 2 harnesses. Hehe.. I'll call him tomorrow. WES www.ClassicHeartbeat.com

Steve @ BROTHERS · 12-11-2003, 01:53 AM

Wes,

Sorry man, I didn't even think to call you. I'll be in the shop after about 10:00am tomorrow so give me a shout. If you know where I can get an isolator, let me know that too.

**jerry moss** · 12-11-2003, 11:24 AM

try bill at vintage chevy truck in fremont, ca. 510-651-5874. is J.C. going to be in today (12-11) ? he was supposed to call me back a few says ago. thanks

Steve @ BROTHERS · 12-11-2003, 12:32 PM

Yeah JC will be there bright and early today if you want to call him. I'll remind him he was supposed to call you when I get there too. Thanks for the tip on the isolator. I'll give Bill a call when I get in.

**Downtown** · 12-11-2003, 01:50 PM

Steve

What is an isolator? I just took apart a 1970 longhorn camper special. The wiring harness had been spliced a couple of times, but if there is something else you can use let me know. Both battery trays are in really good shape if you need them.

Mark

Steve @ BROTHERS · 12-11-2003, 03:20 PM

Downtown,

The isolator is the part of the system that separates the batteries so they can operate independently. The aftermarket one that was on the truck we have looked like a small stereo amplifier. To be honest, I'm not sure what the factory isolator is suppose to look like 'cause our truck didn't have it. According to Wes at Classic Heatbeat, he's sending us a harness with the isolator included. Thanks for the offer on the tray and stuff. We may end-up needing extra parts if we decide to create a kit so I'll keep you posted. As always, this board and it's members have proven to be an awesome resource, thanks everyone!!!

desertchevy · 12-13-2003, 12:47 AM

Downtown

how much do you want for your dual battery trays?

**Downtown** · 12-13-2003, 01:13 PM

How about $50 plus shipping for both the regular and auxillary tray. The trays are very solid. No rust through or bubbling type rust. Just surface rust. Should clean up real nice. If your interested I can get pics.

No3Fan4Ever · 12-13-2003, 07:45 PM

Does anyone have a picture of what this factory set-up should look like?
My longhorn is supposed to have dual batteries but when I bought it all that is under the hood is the second battery tray with some wires that stop at that location

JimKshortstep4x4 · 12-13-2003, 10:16 PM

The schematic in the assembly manual is pretty helpful.

If you don't have a manual, I can fax you the page as I don't have a scanner.

Jim

**Richard** · 12-14-2003, 03:30 AM

The factory isolator is a heavy duty relay. Ties into the ignition and links both batterys together when the key is on to charge them both, separates them when the key is off. Not the best setup IMO. If one battery develops a short or weakens faster than the other it can cause problems. The charging system sees the two as one. A true isolator makes sure the battery that needs charging gets charged and prevents one battery from affecting the other. I cant see any reason for doing it the way it was done 30 years ago except for somebody wanting to say its original or some concours resto (which you may be doing). There is a schematic in the 72 sevice manual.

724x4a/cchevy · 12-14-2003, 10:49 AM

Lets see some pictures! Sounds kinda neat, especially for people who are putting larger serios in their trucks.

No3Fan4Ever · 12-28-2003, 06:55 PM

Is this what you are describing? How do the little eyelet connectors attach to a battery terminal?
As you can see all I have is the rotten battery tray and the wire terminals. I'm just not familiar with this set-up.

**Canadian694x4** · 12-28-2003, 08:32 PM

Old or not Dual battery's is really handy for anyone operating an our year of truck when equiped with a plow...I've looked at a few (beater)trucks with plows and the owner has rigged up sum shoty looking dual battery setup due to the power needs of running the hydraulic pump...I've always thought it would be nice to know or be able to purchase a old style setup to run to dual battery's properly if I did get myself a plow truck...

dinnut · 12-28-2003, 09:07 PM

does cpne's truck have dual batterys?

roger0080 · 12-29-2003, 02:53 AM

Downtown, if the dual battery trays are not sold, I would be interested in buying them for that price.

**Downtown** · 12-29-2003, 12:07 PM

Sorry, Battery boxes are sold.

Mark

ftw80 · 01-12-2004, 02:23 PM

my truck came with dula batteries and camper wiring so I am assuming this is a factory isolator?

more pics here http://www.noscade.com/chevy.htm

Steve @ BROTHERS · 01-12-2004, 02:35 PM

From what I've gathered so far and what Wes @ Classic Heartbeat has sent me, that looks like an aftermarket isolator similar to the one my truck had. The harness Wes sent me has the factory isolator and it looks like a plain ol' relay like on an A/C unit. Too busy right now moving to post any pics, but if I think about it after the chaos, I'll put some up. Thanks

ftw80 · 01-12-2004, 02:43 PM

maybe someone changed it due to problems Richard mentioned above.

12-10-2003, 10:43 PM	#1
Steve @ BROTHERS Registered User Join Date: Nov 2001 Location: Corona,CA Posts: 48	WANTED: Dual Battery Isolator & Harness We (me) are working on a 1970 4x4 that came from the factory with a dual battey option. Unfortaunately, the original owner modified the harness and changed the isolator. We need the original isolator and harness for our project. If anyone can help, please contact me at our office by email or phone. Thanks in advance!!! PS - There is a good chance that BROTHERS will be reproducing an original style dual battery kit so trucks not originally equipped can be converted. We will keep you posted on the status of this kit should we decide for sure to go forward with it. __________________ Steve Flanders BROTHERS Toll Free 800-977-2767 Local Phone 951-808-9790 Email Steve@BrothersTrucks.com

12-10-2003, 11:07 PM	#2
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	Hmmmmm, I wonder if I should tell JC that I have 2 harnesses. Hehe.. I'll call him tomorrow. WES www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

12-11-2003, 01:53 AM	#3
Steve @ BROTHERS Registered User Join Date: Nov 2001 Location: Corona,CA Posts: 48	Wes, Sorry man, I didn't even think to call you. I'll be in the shop after about 10:00am tomorrow so give me a shout. If you know where I can get an isolator, let me know that too. __________________ Steve Flanders BROTHERS Toll Free 800-977-2767 Local Phone 951-808-9790 Email Steve@BrothersTrucks.com

12-11-2003, 11:24 AM	#4
jerry moss Born Psycho Join Date: Feb 2001 Location: brentwood,cal,usa Posts: 4,944	try bill at vintage chevy truck in fremont, ca. 510-651-5874. is J.C. going to be in today (12-11) ? he was supposed to call me back a few says ago. thanks __________________ jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA

12-11-2003, 12:32 PM	#5
Steve @ BROTHERS Registered User Join Date: Nov 2001 Location: Corona,CA Posts: 48	Yeah JC will be there bright and early today if you want to call him. I'll remind him he was supposed to call you when I get there too. Thanks for the tip on the isolator. I'll give Bill a call when I get in. __________________ Steve Flanders BROTHERS Toll Free 800-977-2767 Local Phone 951-808-9790 Email Steve@BrothersTrucks.com

12-11-2003, 01:50 PM	#6
Downtown Senior Member Join Date: Dec 1999 Location: New Palestine, IN Posts: 471	Steve What is an isolator? I just took apart a 1970 longhorn camper special. The wiring harness had been spliced a couple of times, but if there is something else you can use let me know. Both battery trays are in really good shape if you need them. Mark __________________ 72 Super Cheyenne Longbed 350 49,000 original miles and My dad ordered it new 66 Chevy Caprice 2 dr 77 Caprice Estate Wagon New Palestine, IN

12-11-2003, 03:20 PM	#7
Steve @ BROTHERS Registered User Join Date: Nov 2001 Location: Corona,CA Posts: 48	Downtown, The isolator is the part of the system that separates the batteries so they can operate independently. The aftermarket one that was on the truck we have looked like a small stereo amplifier. To be honest, I'm not sure what the factory isolator is suppose to look like 'cause our truck didn't have it. According to Wes at Classic Heatbeat, he's sending us a harness with the isolator included. Thanks for the offer on the tray and stuff. We may end-up needing extra parts if we decide to create a kit so I'll keep you posted. As always, this board and it's members have proven to be an awesome resource, thanks everyone!!! __________________ Steve Flanders BROTHERS Toll Free 800-977-2767 Local Phone 951-808-9790 Email Steve@BrothersTrucks.com

12-13-2003, 12:47 AM	#8
desertchevy Registered User Join Date: Dec 2003 Location: Fairbanks Alaska Posts: 222	dual trays Downtown how much do you want for your dual battery trays? __________________ 2006 Dodge Quad Cab 4X4 2001 Chevy Impala 2006 Corvette 2009 Fusion 1964 Toyota Landcruiser FJ45 Wagon

12-13-2003, 01:13 PM	#9
Downtown Senior Member Join Date: Dec 1999 Location: New Palestine, IN Posts: 471	How about $50 plus shipping for both the regular and auxillary tray. The trays are very solid. No rust through or bubbling type rust. Just surface rust. Should clean up real nice. If your interested I can get pics. __________________ 72 Super Cheyenne Longbed 350 49,000 original miles and My dad ordered it new 66 Chevy Caprice 2 dr 77 Caprice Estate Wagon New Palestine, IN

12-13-2003, 07:45 PM	#10
No3Fan4Ever Running on empty Join Date: Aug 2002 Location: Roanoke, Virginia Posts: 1,033	Does anyone have a picture of what this factory set-up should look like? My longhorn is supposed to have dual batteries but when I bought it all that is under the hood is the second battery tray with some wires that stop at that location __________________ _____________________________________________ Tim We have two rules here at the Rock. Rule #1: No writing on the walls. Rule#2: Obey all rules 70 GMC Sierra Grande "Custom Camper" Longhorn 402 Big Block TH400 PS PB factory AC Posi; 94 Bronco XLT 302, auto;worn out daily driver

12-13-2003, 10:16 PM	#11
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	The schematic in the assembly manual is pretty helpful. If you don't have a manual, I can fax you the page as I don't have a scanner. Jim

12-14-2003, 03:30 AM	#12
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,896	The factory isolator is a heavy duty relay. Ties into the ignition and links both batterys together when the key is on to charge them both, separates them when the key is off. Not the best setup IMO. If one battery develops a short or weakens faster than the other it can cause problems. The charging system sees the two as one. A true isolator makes sure the battery that needs charging gets charged and prevents one battery from affecting the other. I cant see any reason for doing it the way it was done 30 years ago except for somebody wanting to say its original or some concours resto (which you may be doing). There is a schematic in the 72 sevice manual. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

12-14-2003, 10:49 AM	#13
724x4a/cchevy Self-proclaimed LED man Join Date: Nov 2003 Location: Harrisburg, Missouri Posts: 1,021	Lets see some pictures! Sounds kinda neat, especially for people who are putting larger serios in their trucks. __________________ My LED Website My Photobucket Album of LED's Ask me about hand-made custom L.E.D brake and reverse lights. <- LINK I also do LED: -Third Brake/Cargo -Brake (truck and burb) -Reverse (truck and burb) -67-68 Front Turn Signals -69-70 Front Turn Signals -71-72 Front Turn Signals -GMC Front Turn Signals I can also do custom lights for other vehicles....i did a set for a AMC Gremlin once Norwood Survivor

12-28-2003, 06:55 PM	#14
No3Fan4Ever Running on empty Join Date: Aug 2002 Location: Roanoke, Virginia Posts: 1,033	Is this what you are describing? How do the little eyelet connectors attach to a battery terminal? As you can see all I have is the rotten battery tray and the wire terminals. I'm just not familiar with this set-up. Attached Images __________________ _____________________________________________ Tim We have two rules here at the Rock. Rule #1: No writing on the walls. Rule#2: Obey all rules 70 GMC Sierra Grande "Custom Camper" Longhorn 402 Big Block TH400 PS PB factory AC Posi; 94 Bronco XLT 302, auto;worn out daily driver Last edited by No3Fan4Ever; 12-28-2003 at 06:59 PM.

12-28-2003, 08:32 PM	#15
Canadian694x4 Born To Lose Club Join Date: Feb 2003 Location: Calgary, Alberta/Oxenden, Ontario, Great White North Posts: 13,307	Old or not Dual battery's is really handy for anyone operating an our year of truck when equiped with a plow...I've looked at a few (beater)trucks with plows and the owner has rigged up sum shoty looking dual battery setup due to the power needs of running the hydraulic pump...I've always thought it would be nice to know or be able to purchase a old style setup to run to dual battery's properly if I did get myself a plow truck... __________________ Brian Smith - "Born To Lose" 1969 Chevrolet K10 LWB Fleetside - Proud Owner For 22 Yrs - 1 of 208 Built & Sold In Canada!- 283 V8/350TH/NP208, 2" All Spring Lift, 32" Good Year MT/R's. 1972 GMC K2500 Custom LWB Fleetside - Proud Owner For 3 Yrs - 1 of 571 Built & Sold In Canada! - 350 V8/SM465/NP205, 4” Rough Country Lift, 33” Interco TSL Thornbirds 2007.5 GMC Sierra SLE 2500HD 4x4 - Proud Owner For 17 Yrs- 6.6L V8 Duramax Diesel/Allison 1000, 2" Lift, 33" Mickey Thompson MTZ's. 2008 Yamaha Raptor 700r - Proud Owner For 15 Yrs - ITP Mud Lites. 2015 John Deere 1025R - Proud Owner For 8 Yrs - 24HP Diesel/H120/54D/260B/SB1154.



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12-28-2003, 09:07 PM	#16
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	does cpne's truck have dual batterys? __________________ 70 longbed 496/th400/Ford 9"

12-29-2003, 02:53 AM	#17
roger0080 Registered User Join Date: Nov 2000 Location: Carver County, Minnesota, USA Posts: 626	Downtown, if the dual battery trays are not sold, I would be interested in buying them for that price. __________________ 72 Chev C-10 90% restored (former AZ truck) ... 71 Chev K-20 Cheyenne my vacation crusier... 72 Chev C-10 Now retired and striped after many faithful miles... 72 GMC 1500 Retired to the junk yard after bought new in '71...

12-29-2003, 12:07 PM	#18
Downtown Senior Member Join Date: Dec 1999 Location: New Palestine, IN Posts: 471	Sorry, Battery boxes are sold. Mark __________________ 72 Super Cheyenne Longbed 350 49,000 original miles and My dad ordered it new 66 Chevy Caprice 2 dr 77 Caprice Estate Wagon New Palestine, IN

01-12-2004, 02:23 PM	#19
ftw80 Registered User Join Date: Feb 2000 Location: hawaii Posts: 268	factory isolator pic my truck came with dula batteries and camper wiring so I am assuming this is a factory isolator? more pics here http://www.noscade.com/chevy.htm __________________ Haleiwa, Hi. 1972 Custom Camper Cheyenne Super c/20 Longhorn 402bb 78k a/c, tach, tilt, tool stowage 48panhead 74 bronco 71 bronco http://noscade.com No Scade is pidgin English for "not scared" similar to "no fear".

01-12-2004, 02:35 PM	#20
Steve @ BROTHERS Registered User Join Date: Nov 2001 Location: Corona,CA Posts: 48	From what I've gathered so far and what Wes @ Classic Heartbeat has sent me, that looks like an aftermarket isolator similar to the one my truck had. The harness Wes sent me has the factory isolator and it looks like a plain ol' relay like on an A/C unit. Too busy right now moving to post any pics, but if I think about it after the chaos, I'll put some up. Thanks __________________ Steve Flanders BROTHERS Toll Free 800-977-2767 Local Phone 951-808-9790 Email Steve@BrothersTrucks.com

01-12-2004, 02:43 PM	#21
ftw80 Registered User Join Date: Feb 2000 Location: hawaii Posts: 268	maybe someone changed it due to problems Richard mentioned above. __________________ Haleiwa, Hi. 1972 Custom Camper Cheyenne Super c/20 Longhorn 402bb 78k a/c, tach, tilt, tool stowage 48panhead 74 bronco 71 bronco http://noscade.com No Scade is pidgin English for "not scared" similar to "no fear".

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