Electrical guru's - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource


General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

Reply
 
LinkBack Thread Tools Search this Thread
  #26  
Old 02-28-2009
Level I Supporter
 
Join Date: Aug 2006
Location: Durham, NC
Posts: 3,657
I just checked the schematics for the fuel pump relay. The 12V going to the relay for the fuel pump power is HOT ALL THE TIME! The 12V going to the fuel pump relay coil is HOT during RUN and START. You can also pick this 12V up going to the coilpack (red/green wire).
Reply With Quote
  #27  
Old 02-28-2009
04blackedge's Avatar
RF Veteran
Thread Starter
iTrader: (13)
 
Join Date: Jan 2007
Location: Durham, NC
Posts: 23,426
Ok, I'll check that in my wiring diagram to find where the easiest place to pick that up will be.
Reply With Quote
  #28  
Old 02-28-2009
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
Is it done yet?
Reply With Quote
  #29  
Old 02-28-2009
04blackedge's Avatar
RF Veteran
Thread Starter
iTrader: (13)
 
Join Date: Jan 2007
Location: Durham, NC
Posts: 23,426
Nope, finishing editing a few how-tos and then I'll go outside and do work.
Reply With Quote
  #30  
Old 02-28-2009
Goodysgotacuda's Avatar
Member
iTrader: (1)
 
Join Date: Jul 2008
Location: Las Vegas, NV
Posts: 1,496
Quote:
Originally Posted by Takeda View Post
I just checked the schematics for the fuel pump relay. The 12V going to the relay for the fuel pump power is HOT ALL THE TIME! The 12V going to the fuel pump relay coil is HOT during RUN and START. You can also pick this 12V up going to the coilpack (red/green wire).
So use the ground side which would be grounded for start/run to trigger a relay for the radio....

You don't have to use power to trigger a relay you install. Just my 2cents
Reply With Quote
  #31  
Old 03-01-2009
Level I Supporter
 
Join Date: Aug 2006
Location: Durham, NC
Posts: 3,657
Quote:
Originally Posted by Goodysgotacuda View Post
So use the ground side which would be grounded for start/run to trigger a relay for the radio....

You don't have to use power to trigger a relay you install. Just my 2cents
If he uses a 12V circuit that is HOT during RUN and START, he won't need the additional relay. The only problem with this, his head unit will not work in ACC mode.
Reply With Quote
  #32  
Old 03-01-2009
Goodysgotacuda's Avatar
Member
iTrader: (1)
 
Join Date: Jul 2008
Location: Las Vegas, NV
Posts: 1,496
He has to make sure he disconnects the factory wiring to the radio too, or his fuel pump would run in the acc mode.
Reply With Quote
  #33  
Old 03-01-2009
04blackedge's Avatar
RF Veteran
Thread Starter
iTrader: (13)
 
Join Date: Jan 2007
Location: Durham, NC
Posts: 23,426
Yeah I wouldn't use both wires together. I'm going to work on power to accessory when the key is out then I'll try both of these.
Reply With Quote
  #34  
Old 03-01-2009
Level I Supporter
 
Join Date: Aug 2006
Location: Durham, NC
Posts: 3,657
Quote:
Originally Posted by Goodysgotacuda View Post
He has to make sure he disconnects the factory wiring to the radio too, or his fuel pump would run in the acc mode.

Yes, he does need to disconnect the present "switvched 12V", but if he didn't, the fuel pump wouldn't run in ACC mode, because the PCM wouldn't ground the coil on the fuel pump relay.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
electrical guru's required: spotlight bulb upgrades rangerrunner11 General Technical & Electrical 2 06-23-2011 06:59 AM
Calling All Electrical/OHC guru's!!!! RangerNDog General Ford Ranger Discussion 6 07-21-2009 03:40 PM
For you electrical guru's..... lifted97ranger General Technical & Electrical 18 12-17-2006 10:00 AM
GURU'S: Can i use a stock tach and add a shift light? TippnOver General Technical & Electrical 9 12-25-2005 08:01 AM
need help with e-fan....calling all electrical guru's.. TippnOver General Technical & Electrical 12 11-10-2005 02:52 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 09:19 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.