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 > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-05-2009, 07:59 PM   #1
78-5.3
Registered User
 
78-5.3's Avatar
 
Join Date: Oct 2009
Location: Waterboro ,MAINE
Posts: 547
fuel gauge wire on 87 tbi

ok i relized that i dont have a wire for my fuel gauge!!!!!! i have the fuel pump plug to the relay but where does the fuel gauge wire go on a 87 r10 sending unit???

Last edited by 78-5.3; 11-05-2009 at 08:00 PM.
78-5.3 is offline   Reply With Quote
Old 11-05-2009, 10:11 PM   #2
Restrorob
The One And Only !!!
 
Restrorob's Avatar
 
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
Re: fuel gauge wire on 87 tbi

A little more detail into what your doing may help......


Are you replacing the sending unit and find no provision for the fuel gauge ?

If so, I just ran into the same problem installing a 86 tank in my 97. I bought a 86 sending unit but it wasn't right (not like the old one out of the 86), I found there are a couple different style sending units and couldn't find the proper one in a aftermarket. The local dealer has the right one but I'm not shelling out close to $400 for a bare (no pump included) sending unit.
__________________
93 Jeep XJ
88 Buick La Sabra
Toys;
88 TA-GTA in the works....
97 GMC Ext. Cab
502 Crate 5 Spd......Sucks Gas But Haulz Azz !


The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic.


"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
Restrorob is offline   Reply With Quote
Old 11-07-2009, 12:00 PM   #3
78-5.3
Registered User
 
78-5.3's Avatar
 
Join Date: Oct 2009
Location: Waterboro ,MAINE
Posts: 547
Re: fuel gauge wire on 87 tbi

Quote:
Originally Posted by Restrorob View Post
A little more detail into what your doing may help......


Are you replacing the sending unit and find no provision for the fuel gauge ?

If so, I just ran into the same problem installing a 86 tank in my 97. I bought a 86 sending unit but it wasn't right (not like the old one out of the 86), I found there are a couple different style sending units and couldn't find the proper one in a aftermarket. The local dealer has the right one but I'm not shelling out close to $400 for a bare (no pump included) sending unit.
ok i put a 87 senting unit into my 78 and the unit came with the plug for fuel pump but when i installled it all and fitted it to the truck i relized i didnt see the wire for the sending unit!!!
78-5.3 is offline   Reply With Quote
Old 11-07-2009, 09:08 PM   #4
Restrorob
The One And Only !!!
 
Restrorob's Avatar
 
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
Re: fuel gauge wire on 87 tbi

You should have three wires coming off the sending unit, A gray and purple in a connector plug and a black with a eyelet that goes to a grounding point (frame).

The gray wire powers the fuel pump and the purple activates the fuel gauge.
__________________
93 Jeep XJ
88 Buick La Sabra
Toys;
88 TA-GTA in the works....
97 GMC Ext. Cab
502 Crate 5 Spd......Sucks Gas But Haulz Azz !


The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic.


"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
Restrorob is offline   Reply With Quote
Old 11-08-2009, 08:59 AM   #5
78-5.3
Registered User
 
78-5.3's Avatar
 
Join Date: Oct 2009
Location: Waterboro ,MAINE
Posts: 547
Re: fuel gauge wire on 87 tbi

Quote:
Originally Posted by Restrorob View Post
You should have three wires coming off the sending unit, A gray and purple in a connector plug and a black with a eyelet that goes to a grounding point (frame).

The gray wire powers the fuel pump and the purple activates the fuel gauge.
oh so i need to look at some schematics
78-5.3 is offline   Reply With Quote
Old 11-08-2009, 10:07 AM   #6
Desert1957
Registered User
 
Desert1957's Avatar
 
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
Re: fuel gauge wire on 87 tbi

I have OEM electrical manuals for an 87 , what do you need? Fuel sender wiring only? or the whole run of the wiring front to back...

Let me know...

Desert

Last edited by Desert1957; 11-08-2009 at 10:07 AM.
Desert1957 is offline   Reply With Quote
Old 11-08-2009, 03:54 PM   #7
78-5.3
Registered User
 
78-5.3's Avatar
 
Join Date: Oct 2009
Location: Waterboro ,MAINE
Posts: 547
Re: fuel gauge wire on 87 tbi

Quote:
Originally Posted by Desert1957 View Post
I have OEM electrical manuals for an 87 , what do you need? Fuel sender wiring only? or the whole run of the wiring front to back...

Let me know...

Desert

hey thanks just the wiring from the tank to the front where ever it goes!!!
78-5.3 is offline   Reply With Quote
Old 11-09-2009, 07:07 AM   #8
Desert1957
Registered User
 
Desert1957's Avatar
 
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
Re: fuel gauge wire on 87 tbi

ok,
I will post it up later today....

Desert
Desert1957 is offline   Reply With Quote
Old 11-11-2009, 11:04 AM   #9
Desert1957
Registered User
 
Desert1957's Avatar
 
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
Re: fuel gauge wire on 87 tbi

Sorry its been a few days since I told you I would post this...
Here is the wiring at the tanks and fuel senders , This should give you a start. It shows color codes and locations in the connectors



Fuel tank selector on dash if you have dual tanks


Not sure if this is what you need, If you need the dash cluster wiring let me know
Desert
Desert1957 is offline   Reply With Quote
Reply

Bookmarks


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 10:07 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com