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 > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-05-2013, 03:20 PM   #1
yossarian19
Registered User
 
Join Date: Sep 2011
Location: Nevada City, CA
Posts: 908
Fusing the injector B+ wires ..?

So, I'm modding my 02 Vortec 4.8 harness.
I think what I see going on is that the power to the injectors is from the fuse box and they are switched on the ground side by the computer.
I want to put the driver's side injectors on one fuse and the passenger's on another.
So, do I strip a bit of wire off each injector's power (pink) wire & join them together, then from that gang of 4 to the fuse? Any suggestions about technique? I'm considering a soldered gang w/ one heavier wire going to the fuse & heat shrink to seal it up.
How did you guys do it?
yossarian19 is offline   Reply With Quote
Old 01-07-2013, 04:02 PM   #2
OldCreek
Registered User
 
OldCreek's Avatar
 
Join Date: Jan 2007
Location: Central Coast California
Posts: 1,026
Re: Fusing the injector B+ wires ..?

Thats how I did mine.

It is a little more difficult to solder 4 wires onto 1 because of heat requirements. I'm not sure if other guys are running a BUS bar or something else to connect them all....
__________________
1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold
1972 C10 5.3L/4L60E 12bolt 5Lug - Sold
1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!!
1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold
1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold
1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold)
2003 K2500HD 8.1/Allison1000/NP263
OldCreek is offline   Reply With Quote
Old 01-08-2013, 10:07 AM   #3
Edge64
Registered User
 
Join Date: Jan 2011
Location: Frisco, Texas
Posts: 5
Re: Fusing the injector B+ wires ..?

I did mine the same way but it should only be 2 wires per injector bank so you should only have to bring 2 wires to each fuse.
Edge64 is offline   Reply With Quote
Old 01-08-2013, 11:15 AM   #4
yossarian19
Registered User
 
Join Date: Sep 2011
Location: Nevada City, CA
Posts: 908
Re: Fusing the injector B+ wires ..?

They must have needed the OT when they built mine - I've got a pink wire running to each injector for a total of 8.
I bought a cheapo radio shack soldering iron and learned something. I eventually wound up with two gangs of four injector wires, each gang soldered to a single lead to the fuse. Two fuses, two gangs of four injectors, some heat shrink & call it a day.
It was challenging to solder with the Radio Shack cheapy iron that I had. I'm a newbie, so it probably wasn't just the iron. I think, though, that some of the difficulty was that all that wire (1/4" of total wire thickness) soaked the heat out of the iron before it all got hot enough to melt solder. So it took a while doing one wire at a time, accidentally melting another wire free while I worked, and going back over everything until it passed a tug test & visual inspection.
I'd reccomend something bigger than a 40 watt iron for this job - or use a crimp as the primary connection & then add solder to the crimp just for good luck.
yossarian19 is offline   Reply With Quote
Old 01-08-2013, 11:43 AM   #5
mej005
Registered User
 
Join Date: Aug 2010
Location: ruston, la
Posts: 97
Re: Fusing the injector B+ wires ..?

I just did this last weekend and I soldered all four to the connector that goes to the fuse block, and I used the fuse block shown on lt1swap.com. I used an 80watt iron though, and didn't have a problem.

I'd have to look to be 100% sure but I have the pcm 12v constant on a fuse, pcm ignition switched 12v on a fuse, passenger and driver side injectors and coils on a fuse(4 fuses total), MAF on a fuse, fuel pump on a fuse and relay, and I think the transmission on a fuse. My block has 9 fuses right now and 3 relays. It wasn't that difficult, just draw it out on paper first and solder accordingly, because I didn't and had to redo some of the connections to fit my application.
mej005 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 12:49 AM.


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