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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Electrical Is there a reason the fuel pump circuit isn't fused?

  • Thread starter Thread starter evintho
  • Start date Start date Jan 6, 2021

evintho

20+ Year Stangneter
Nov 12, 2003
683
245
73
Santa Rosa, CA.
Jan 6, 2021
#1
  • Jan 6, 2021
  • #1
Yep, I'm back with another dumb electrical question. See title. Is it because the inertia switch is part of the circuit? '93 5.0/AOD.
What I'm doing is integrating a Painless wiring harness into the factory Mustang engine control harness. The Painless fusebox has a provision for a 15a fuel pump fuse.
Can someone straighten this out for me? Thanks!
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
17,945
224
Massachusetts
Jan 6, 2021
#2
  • Jan 6, 2021
  • #2
The fuel pump power circuit passes through a 18ga fusible link. It's in the bundle of links off the big think yellow wire off the starter relay

The inertia switch is not part of the circuit.
 

evintho

20+ Year Stangneter
Nov 12, 2003
683
245
73
Santa Rosa, CA.
Jan 6, 2021
#3
  • Jan 6, 2021
  • #3
Roger that. Thank you!
I also noticed the Painless fusebox has a 30a fuse for the coil. I assume that's for a regular coil, not an E-coil like the Mustang has? I noted a fusible link in the Mustangs rd/grn wire that runs from the coil. That must be the circuit protector for that line, correct?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
17,945
224
Massachusetts
Jan 7, 2021
#4
  • Jan 7, 2021
  • #4
Correct. A 20Ga fusible link protects the coil
 
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