View Full Version : Fuel pump plug polarity
oldguy668
03-07-2011, 06:55 PM
The plug and pigtail I bought from RJM has two black wires. Can anyone tell me which lead is the + ?
Here's the plug
http://rjminjectiontech.com/images/fuel-pump-connector.jpg
Mustang Man
03-08-2011, 01:24 PM
I am not in front of my computer right now. Best thing I can tell you is to hit our website and check through our build stories under "project cars" as I remember marking it on the pump flange and taking a photo. Perhaps the fuel system story or the wiring story.
Sorry I can't be of more help.
Mark
Mustang Man
03-08-2011, 11:18 PM
OK, sorry for the late follow up, it's been a long day off-site (but we're finally going to have color on our '68 Mustang, but that's another post)...
Anyway, here's the photo I was talking about. You can see the "+" symbol on the left side of the pump connector in this photo...
http://image.mustangandfords.com/f/9009119+w750+st0/mufp_0704_21_z+factory_five_racing_roadster_wiring +fuel_pump.jpg
HTH...
Mark
oldguy668
03-09-2011, 06:32 AM
Thanks Mark. I did spend some time cruising your site yesterday but I did not stumble upon that picture. Found lots of other good stuff, though.
Mustang Man
03-09-2011, 08:18 AM
Glad to hear. I only had the Crackberry on me so it would have been painfully slow for me to dig through the site and find the photo I was mentioning.
Mark