LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

Power wire for fuel pump?

Thread Tools
 
Search this Thread
 
Old Feb 25, 2016 | 05:59 AM
  #1  
utfan01ss's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: May 2010
Posts: 426
Likes: 0
From: Chickamauga, GA
Car: 89 IROC-Z
Engine: 355ci SBC
Transmission: TH700R4 - 2500 stall
Axle/Gears: 3.70 9 bolt
Power wire for fuel pump?

I've finally made it to the last part of my swap... Wiring. I've pretty much nailed down a game plan on getting this thing finished but have a couple questions.

Which wire powers the fuel pump? By the diagram I have it shows a Tan/White wire on the C100 as the fuel control. Is this the one I need to hook my Painless fuel pump power wire to?

Also, for a 12v switched power source. Would it be better to use the large pink coil wire from the C100 or to locate a fused wire on the C207 under the dash? This harness gets 12v constant from the starter lug, so that part is easy...

Other than those couple things the rest is easy... Hope to have this new motor fired up this weekend if possible.






Reply
Old Feb 25, 2016 | 07:19 PM
  #2  
QwkTrip's Avatar
COTM Editor
25 Year Member
iTrader: (22)
 
Joined: Mar 2001
Posts: 10,405
Likes: 2,081
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Power wire for fuel pump?

Correct, the TAN-WHT colored wire is the fuel pump B+.

Yes, you can grab switched power from the old PNK coil wire. It is on a fusible link so just be aware if it blows that you're replacing that link rather than a more simple job of replacing a fuse.
Reply
Old Feb 28, 2016 | 09:13 PM
  #3  
utfan01ss's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: May 2010
Posts: 426
Likes: 0
From: Chickamauga, GA
Car: 89 IROC-Z
Engine: 355ci SBC
Transmission: TH700R4 - 2500 stall
Axle/Gears: 3.70 9 bolt
Re: Power wire for fuel pump?

Originally Posted by QwkTrip
Correct, the TAN-WHT colored wire is the fuel pump B+.

Yes, you can grab switched power from the old PNK coil wire. It is on a fusible link so just be aware if it blows that you're replacing that link rather than a more simple job of replacing a fuse.
Thanks, we got it wired up and working great. Appreciate the help!
Reply
Old Mar 13, 2016 | 12:58 PM
  #4  
Pocket's Avatar
Supreme Member
20 Year Member
iTrader: (24)
 
Joined: Jun 2005
Posts: 8,117
Likes: 361
From: NC
Car: 91 Trans Am
Re: Power wire for fuel pump?

Yup, the C100 holds the FP wire for 88-92. Earlier cars with an in-tank pump had it in the C207

12V IGN for the fuseblock or any stand alone can hook into any pnk wire on the car. Since you've got alot of stuff near the C207 already, Id use one of those. Doesnt matter which, they all should have 12v IGN
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Spaceboy1980
LTX and LSX
7
Feb 18, 2016 07:06 PM
Drone358
Electronics
9
Feb 4, 2016 01:22 PM
mrestrictrplate
Interior
5
Jan 31, 2016 03:47 PM
Gunner242
Engine Swap
3
Jan 30, 2016 10:42 AM
evilstuie
Tech / General Engine
3
Jan 29, 2016 04:14 PM




All times are GMT -5. The time now is 09:52 PM.