LED light bulbs have higher resistance than ordinary incandescent light bulbs. This will cause a problem on most vehicles since ordinary thermal flashers, and even most modern electronic flashers are designed to cause the existing turn signal light bulb to flash at a higher rate. Sometimes this is referred to as "hyperblinking". This is intentionally done in order to indicate that the other bulb which is part of a set on one side is burned out. These flashers won't detect the LED bulbs, and will cause the light to always flash at a higher rate. One solution is to use high wattage resistors to shunt (attach in parallel) across the turn signal LED bulbs. This will simulate the existence of an incandescent bulb. The problems with this is set up are the resistors get very hot, and they have to be wired into place. The next solution which makes more sense, and is plug & play is to get a flasher designed specifically for LED bulbs. These relays are not usually available locally, but some online retail stores sell them such as http://www.ryderfleetproducts.com/c...=ccccadehieljjddcfkmcgfmdfoldflm.0&oid=136565.
The relay is manufactured by a company called Grote, and the part number for most 3 prong Ford vehicles is 44892. An alternate name is Imperial, and the part number is 80112. This is what it looks like:
The flasher is a little deeper than an ordinary flasher, so you might have to leave the cover of your fuse box off. I installed this in a 2004 Taurus, and had to leave the cover off. These links have flashers with many pin configurations: http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&Page2Disp=/flashers.htm
http://www.ledlight.com/electronic-led-flasher-ep36.aspx
Here's another link: http://www.v-leds.com/BlinkerWarning-Fix/Electronic-Flashers/5-PIN-ELECTRONIC-LED-p4810389-1-3.html.
The relay is manufactured by a company called Grote, and the part number for most 3 prong Ford vehicles is 44892. An alternate name is Imperial, and the part number is 80112. This is what it looks like:
The flasher is a little deeper than an ordinary flasher, so you might have to leave the cover of your fuse box off. I installed this in a 2004 Taurus, and had to leave the cover off. These links have flashers with many pin configurations: http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&Page2Disp=/flashers.htm
http://www.ledlight.com/electronic-led-flasher-ep36.aspx
Here's another link: http://www.v-leds.com/BlinkerWarning-Fix/Electronic-Flashers/5-PIN-ELECTRONIC-LED-p4810389-1-3.html.