Wiring question. JEG fuel pump relay

Discussion in 'Technical' started by HarleyGA, Oct 6, 2015.

  1. HarleyGA

    HarleyGA Member

    Joined:
    Jan 30, 2012
    Messages:
    403
    Likes Received:
    43
    Trophy Points:
    88
    Location:
    Acworth, GA
    Vehicle:
    73 Grabber,
    I know how to wire a house but automotive wiring is a whole different ballgame. I'm installing a JEGS fuel pump relay in my 73 Maverick. I have a 10 gauge wire for battery power and a 18 gauge that needs to run to the ignition pulled to the front of the car. Can anyone make it easy by telling me the best locations to connect these wires?
     
    HarleyGA, Oct 6, 2015
    #1
  2. Grabber-1

    Grabber-1 Member

    Joined:
    Nov 17, 2004
    Messages:
    348
    Likes Received:
    14
    Trophy Points:
    76
    Location:
    long island ny
    Vehicle:
    71 maverick
    Starter solenoid is probably going to be the easiest. 10 gauge to the large lug that connects to battery, obviously fuse it. The 18 to the small terminal marked "I " (ignition) it's not a full 12v when key is on but should be enough to trip a relay.
     
    Grabber-1, Oct 7, 2015
    #2
  3. HarleyGA

    HarleyGA Member

    Joined:
    Jan 30, 2012
    Messages:
    403
    Likes Received:
    43
    Trophy Points:
    88
    Location:
    Acworth, GA
    Vehicle:
    73 Grabber,
    Thanks. Not sure where the "small terminal marked I" is located.
     
    HarleyGA, Oct 7, 2015
    #3
  4. mav1970

    mav1970 Bob Hatcher

    Joined:
    Mar 9, 2002
    Messages:
    10,633
    Likes Received:
    322
    Trophy Points:
    398
    Location:
    Mountain Top Pa
    Vehicle:
    69.5 Maverick 393 Cleveland Stroker
    I'd like to see the relay that you bought - do you have a link to the catalog page?
     
    mav1970, Oct 7, 2015
    #4
  5. Mavman72

    Mavman72 Gone backwards but lookin' forward

    Joined:
    Apr 24, 2007
    Messages:
    6,759
    Likes Received:
    272
    Trophy Points:
    273
    Location:
    Buffalo N.Y.
    Vehicle:
    1972 Maverick 2 door.Original V-8 3 spd std shift.Also a 72 one owner Sprint sporting a 351 Windsor
    The "I" terminal is also on the solinoid...The two small lugs on it...One is marked "S" the other is "I"...
     
    Mavman72, Oct 8, 2015
    #5
  6. Grabber-1

    Grabber-1 Member

    Joined:
    Nov 17, 2004
    Messages:
    348
    Likes Received:
    14
    Trophy Points:
    76
    Location:
    long island ny
    Vehicle:
    71 maverick
    Thanks Mavman. I should have explained that a little clearer. Sorry
     
    Last edited: Oct 8, 2015
    Grabber-1, Oct 8, 2015
    #6
  7. Krazy Comet

    Krazy Comet Tom

    Joined:
    Sep 13, 2012
    Messages:
    7,709
    Likes Received:
    2,429
    Trophy Points:
    531
    Garage:
    1
    Location:
    Chesapeake VA
    Vehicle:
    1972 Comet GT clone 306 . 1969 Fairlane Cobra 428CJ 1988 T-Bird awaiting 331 ..
    Assuming you're still running points I wouldn't recommend using the I terminal on solenoid to trigger the relay... While it does have 12v when cranking, the voltage falls to around 8v with engine running(yes generally that will keep the relay energized)... May work OK for you but if there are mysterious losses of power to pump that's likely the reason...

    All this said I use the I terminal to power a relay for aux supplies, but the original ign is no longer in use...
     
    Krazy Comet, Oct 8, 2015
    #7
  8. bomrat

    bomrat Member

    Joined:
    Jun 17, 2009
    Messages:
    546
    Likes Received:
    30
    Trophy Points:
    93
    Location:
    North Little Rock, AR
    Vehicle:
    74 Comet 4dr 347 4r70w
    this is what i ran recently and they work awesome. each relay is $25 and $5 for the connector and pins. they work under 8 vdc, supports 70amps. no fooling around, they work. good way to get your relay and fuses together.


    relay: 37702-1AN0022 cooper busseman. m8 and m6 studs.
    fuses: 0495040 40 amp cartridge Style Fuse Green JCase FMX 32V
    pins: 282403-1 CONN MINI MIC SOCKET 22-20AWG
    connector: 282080-1 CONN PLUG 2POS 1.5 SERIES BLACK
     
    bomrat, Oct 9, 2015
    #8
  9. mav1970

    mav1970 Bob Hatcher

    Joined:
    Mar 9, 2002
    Messages:
    10,633
    Likes Received:
    322
    Trophy Points:
    398
    Location:
    Mountain Top Pa
    Vehicle:
    69.5 Maverick 393 Cleveland Stroker
    Where can these parts be bought from?
     
    mav1970, Oct 9, 2015
    #9
  10. 71Mavrk

    71Mavrk Member

    Joined:
    Jul 27, 2011
    Messages:
    1,217
    Likes Received:
    427
    Trophy Points:
    238
    Garage:
    1
    Location:
    Nevada
    Vehicle:
    1971 Maverick Grabber Clone, 1971 Maverick project
    71Mavrk, Oct 9, 2015
    #10
  11. mav1970

    mav1970 Bob Hatcher

    Joined:
    Mar 9, 2002
    Messages:
    10,633
    Likes Received:
    322
    Trophy Points:
    398
    Location:
    Mountain Top Pa
    Vehicle:
    69.5 Maverick 393 Cleveland Stroker
    Thanks for the link - looks like high quality products :thumbs2:
     
    mav1970, Oct 9, 2015
    #11
  12. HarleyGA

    HarleyGA Member

    Joined:
    Jan 30, 2012
    Messages:
    403
    Likes Received:
    43
    Trophy Points:
    88
    Location:
    Acworth, GA
    Vehicle:
    73 Grabber,
     
    HarleyGA, Oct 11, 2015
    #12

Share This Page