4.6L General DiscussionThis section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.
Welcome to Mustang Forums!
Welcome to Mustang Forums.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
Leaving aside that there's no practical reason to have fog lamps and brights on at the same time--there is a relay conveniently placed in the battery junction box (relay #1), named the Fog lamp cutoff relay (makes sense) that does the dirty deed...
This relay is energised when the brights are on or flashed, and when energised it cuts the fog lamp relay's ground circuit, via its pins 3 and 4--so all one has to do is remove that relay and jumper pins 3 and 4 to keep the fog lamps on during bright operation.
Here's what the relay socket looks like:
Pin 3 uses 1/4" spade connector, pin 4 a 3/16" spade. As all that is being switched is the fog lamp relay's coil you can use 18 ga. wire with no problems.
Is there any way to do the same thing with a 2013 GT? In fact, I'd love to have the foglights as my daytime running lights. Have them come on when you turn the key on.
This forum is owned and operated by Internet Brands, Inc., a Delaware
corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford
Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor