I'm stumped here, ready to take it in to the shop.

I replaced my headlight switch with one I found at the jy because my bulb had gone out. When I replaced all the panels and reconnected the battery, I found that my turn signals no longer work. Here's a summary:

1) Turn signals don't work, no clicking, no arrows lighting up, nothing.

2)Everything else on the switch still works, wipers, high beams, windshield fluid

3) All related fuses checked out ok, I found the flasher unit under the dash next to the obd-ii connector, and it seems to be fine. It clicks when the hazards are on, and they work fine. Just no turn signals.

4)I checked for loose wires and didn't see anything obvious. I cleaned the contacts with contact cleaner, and even replaced the original headlight switch. no change.

I can't imagine what I could've done to cause this, I was pretty careful with the headlight switch installation. Any ideas from you diagnosticians out there? Any other obvious things I should check that I may have missed? Thanks.

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2004 Black Ranger Edge Supercab
4.0L SOHC, 5 Spd Manual
Flowmaster 40 Series Single In Dual Out
31X10.50R15 Federal Couragia A/Ts
Bedlined: Mustang Dome, Explorer OHC w/ Buggman LED Panel , Radio Bezel

Forgot to add: Could be related, but sometimes I have to turn the headlight switch off and on several times before the instrument cluster, fog lights, park lights, and tail lights will come on. That's one of the reasons I originally changed the switch, but the problem persisted with the new switch, and in fact it seems to happen more frequently now, even though I changed it back to the old switch. So confused..

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2004 Black Ranger Edge Supercab
4.0L SOHC, 5 Spd Manual
Flowmaster 40 Series Single In Dual Out
31X10.50R15 Federal Couragia A/Ts
Bedlined: Mustang Dome, Explorer OHC w/ Buggman LED Panel , Radio Bezel

replace the bulbs first. or check them. they are dual filament bulbs. i think one of the filaments is busted. after that check the relays.

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http://treadlightly.org/quick-tips-f...four-wheeling/

flasher is bad. the turn signal part and the hazard part are two different things inside one flasher. when i was doing some led work, i shorted out the turn signals, but the hazards still worked.

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Krylon Fusion is for Amateurs.

Thanks guys, I'll replace the flasher first, then the bulbs. Autozone says the only replacement flasher they have is an EP27 with 5 prongs, where my OEM blue flasher has a small sixth prong in the corner. Will this make a difference?

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2004 Black Ranger Edge Supercab
4.0L SOHC, 5 Spd Manual
Flowmaster 40 Series Single In Dual Out
31X10.50R15 Federal Couragia A/Ts
Bedlined: Mustang Dome, Explorer OHC w/ Buggman LED Panel , Radio Bezel

ep 27 flashers are used when people put leds in the turns, if you plan to do that, get that

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Ford Ranger Edge Supercab, 2004 3.0 Auto, 2WD, 4.10 Axle 31x10.5x15 BF Goodrich All Terrain T/A KO's


My Truck Is My Mountain Bike's Ride!

Class III hitch, Rhino Bedliner, Almost Maxed T-Bar Crank, Tuff Country Add A Leaf, Custom Low Anchor Points, OEM ('99) Tow Hooks, Pro Comp Offroad Lights , Mustang Dome Light, Clear Corners, Slim Toolbox, Blinker Mod,Cargo Brake Light Mod,Expo Lighted Visors, Ultra Silverstar heads/fogs, Fog/high mod, Reverse/switched lights, Bike Fork Mounts

the flasher is fine if the hazards work. theres a relay undar the dash that controls the turn signals, found out the hard way when ford charged me 120 bucks just to replace it

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2002 Ranger Edge 2wd | 3.0 v6 auto 8.8 4.10 L/S | 32x11.50 Mud Kings | 28% tint | Chevy Shackles | Cranked B T-bars | Westin Bull bar w/ KC longrange| Three-tone airhorns | air box mod | k&n drop-in | foglamp mod | explorer ohc | alpine headunit | 10" mtx thunder 4500/custom box | kenwood amp| 4 wheel disk brakes | line of fire

Any idea where exactly that relay is, or what it looks like?

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2004 Black Ranger Edge Supercab
4.0L SOHC, 5 Spd Manual
Flowmaster 40 Series Single In Dual Out
31X10.50R15 Federal Couragia A/Ts
Bedlined: Mustang Dome, Explorer OHC w/ Buggman LED Panel , Radio Bezel

The ep27 will be a good investment if you're gonna use led turns anyhow. The little mini pin shouldn't make any difference though.

It might be that you have a bad connection in the plug that goes to the headlight switch itself (on the truck side). Try wiggling each wire around one at a time to see if anything happens, if you get lights on a certain wire, that's likely the culprit.

If that's the issue, you can get a new connector from the JY, & just splice it in with butt connectors & you should be good.

Another thought is the "new" switch is bad too... stranger things have happened.

The other relays should be under the dash (driver's side) in a small box about 3"x4" with a black cover. These will be the small rectangular relays (not the normal larger square relays we're all used to seeing). Pull each relay (one at a time) & check it's contacts to make sure they're not gunked up.

Those little relays are EXPENSIVE at the auto parts stores, like $15 each expensive... I had to buy one a while back when I had issues & turns out that wasn't the problem.
Anyhow, if you can grab some of those relays from the JY, get a handful, they can be live savers



If none of that works, it could be the multifunction switch (turns, wipers, etc) that's having the issue. Mine went bad & it drove me crazy... I couldn't drive in the rain for months until I got a new one.
Check the contacts for corrosion or gunk, spray a little wd-40, the usual remedies.

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Thanks for the advice, Bugg. I did a thorough check for loose wires and dirty contacts, and everything seems to be fine. I didn't find the black box under the dash where the other relays are, though. I searched the threads and found where it is on some earlier models, but did they maybe change it up in 04? I can't find a 3x4 black box anywhere under there.

Here's where I saw the black box on other trucks, but it's not there on mine:


And this is underneath my steering column, I already replaced the blue flasher with an EP27, and no change:

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2004 Black Ranger Edge Supercab
4.0L SOHC, 5 Spd Manual
Flowmaster 40 Series Single In Dual Out
31X10.50R15 Federal Couragia A/Ts
Bedlined: Mustang Dome, Explorer OHC w/ Buggman LED Panel , Radio Bezel

I keep forgetting Ford moved stuff around on the newer trucks

I know somebody will chime in with the location of that relay box though. Seems like mine had 6 or 8 of the small relays in it... might have been a little smaller/larger, that was just a guess

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Just like my girlfriend: every time i think i know where something is, she moves it somewhere else. lol.

Anyhow, I'm gonna break down and take it in to a buddy's shop on thursday to get it diagnosed and fixed. It's getting a little too chilly for hand signals.

__________________
2004 Black Ranger Edge Supercab
4.0L SOHC, 5 Spd Manual
Flowmaster 40 Series Single In Dual Out
31X10.50R15 Federal Couragia A/Ts
Bedlined: Mustang Dome, Explorer OHC w/ Buggman LED Panel , Radio Bezel

I only have ONE hand signal & it's universal

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Ford had a recall affecting Rangers and the multifunction switch was the culprit. There is a couple posts on here because the recall affected vehicles as far back as 02' or 03', I believe. Also, ehow is a decent site for finding info. Hope this helps.

Kudos to Buggman and fifthranger, it was the multifunction switch after all! Picked one from the JY for 17 bucks and problem solved. Thanks guys!

__________________
2004 Black Ranger Edge Supercab
4.0L SOHC, 5 Spd Manual
Flowmaster 40 Series Single In Dual Out
31X10.50R15 Federal Couragia A/Ts
Bedlined: Mustang Dome, Explorer OHC w/ Buggman LED Panel , Radio Bezel