Another electrical gremlin

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

MrMarty51

Full Access Member
Joined
Oct 25, 2012
Posts
7,524
Reaction score
9,381
Location
Eastern Montana
First Name
Martin
Truck Year
1978
Truck Model
K20
Engine Size
400
Allows the fuel pump on heavier duty models prime for 15-20 seconds, compaired to the 1/2 ton 2 second priming.
OHHhhh,that circuit.LOL I never heard of it call a hot fuel module is all.Thank You.
 

TexasOutlaw87Cummins

Full Access Member
Joined
Sep 17, 2012
Posts
231
Reaction score
4
Location
santee
First Name
cody
Truck Year
87
Truck Model
k 30
Engine Size
5.9 cummins
Me neather ... So do I disconnect that ?
 

Jims86

Full Access Member
Joined
Aug 3, 2010
Posts
5,492
Reaction score
133
Location
Patterson,Ca
First Name
Jim
Truck Year
1986
Truck Model
K10 Suburban Silverado
Engine Size
5.7 TBI
yup, just make sure the pink/ blk wire is taken care of. The ecm b orange wire is just as important as well, could be shorting somewhere. How did you find that fuse blown? you using that circuit in your conversion?
 

TexasOutlaw87Cummins

Full Access Member
Joined
Sep 17, 2012
Posts
231
Reaction score
4
Location
santee
First Name
cody
Truck Year
87
Truck Model
k 30
Engine Size
5.9 cummins
I have nice little fuses with light on them :) haha ! Well ok I don't need that any more correct ? It doesn't CONTROLE the sending units or anything like that ?
 

TexasOutlaw87Cummins

Full Access Member
Joined
Sep 17, 2012
Posts
231
Reaction score
4
Location
santee
First Name
cody
Truck Year
87
Truck Model
k 30
Engine Size
5.9 cummins
89 where did you get all those ? Is there any way you can email them to me ?
 

Jims86

Full Access Member
Joined
Aug 3, 2010
Posts
5,492
Reaction score
133
Location
Patterson,Ca
First Name
Jim
Truck Year
1986
Truck Model
K10 Suburban Silverado
Engine Size
5.7 TBI
I have nice little fuses with light on them :) haha ! Well ok I don't need that any more correct ? It doesn't CONTROLE the sending units or anything like that ?

Nope, That would be the gauge Idle fuse. ECM 1 is all the switched power stuff on the pink/black striped wire.
 

TexasOutlaw87Cummins

Full Access Member
Joined
Sep 17, 2012
Posts
231
Reaction score
4
Location
santee
First Name
cody
Truck Year
87
Truck Model
k 30
Engine Size
5.9 cummins
Ok ! So I was looking today and found that this pink and black wire was connected to my sending unit . That's the fuel pump correct ! ?
 

89Suburban

Supporting Member
Supporting Member
Joined
Dec 7, 2010
Posts
24,569
Reaction score
5,930
Location
Southeast PA
First Name
Paw Paw
Truck Year
2007
Truck Model
Chevrolet Tahoe LT
Engine Size
5.3, 4WD
Ok ! So I was looking today and found that this pink and black wire was connected to my sending unit . That's the fuel pump correct ! ?

I think it is supposed to be a tan and a pink and a black for a ground?
 
Last edited:

4WDKC

Full Access Member
Joined
Jan 27, 2016
Posts
2,366
Reaction score
1,090
Location
Southern Florida
First Name
Kacy
Truck Year
1987
Truck Model
V10
Engine Size
350
I know this is an old post but I am having the same problem, with the exception when i switch tanks the truck still doesn't start and the fuse doesn't blow.
 

Latest posts

Forum statistics

Threads
42,329
Posts
913,797
Members
33,827
Latest member
Gord
Top