Poor man's DRL's - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by LargeCar, this thread has received 0 replies and been viewed 1836 times.

 
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 03-20-2006, 10:38 PM Thread Starter
Old Geezer-TDG Mafia #19
 
LargeCar's Avatar
 
Join Date: Dec 2008
Location: Bridge Creek, OK (Tornado Ally)
Posts: 4,396
Points: 62,302
Thanks: 70
Thanked 187 Times in 78 Posts


Images: 9
Poor man's DRL's

This is a project I took on because I am to danged cheap to pay Ford for the relays to do it, and because I still have not found the place to plug in their relay/resistor. I am using the Fog Lights as a Daytime Running Light because of ease of wiring and because I donít use them for anything else.

First off letís lay down some ground rules.

1. It worked for me.
2. If it donít work for you.
3. I ainít responsible for your burnt wires.

With that said let me assure you that this has been well though out, planned, and executed on my own truck before I would do this write up. The amps in this project are very low, I have a 1.5 amp fuse in the fuse holder only as a precaution during initial testing. The gauge of wire I used is far to heavy for the situation, 18-20 gauge is plenty big. The power for the Fog Lights is being supplied by the factory wiring circuit, you are just fooling the factory relay into energizing. As a matter of fact the smaller the wire used the easier it will be for you to stuff all of it back into the connectors. If the wire you use, or you do a sloppy job of soldering, is to big the wires will be hard to put back into the connectors. Ok, on to the list of tools and materials.

Tools
1. 10mm socket and ratchet.
2. Needle nose pliers.
3. Wire cutters.
4. A very very small screwdriver to release the pins on the wire connectors.
5. Soldering gun.

Materials
1. DPST relay (Double Pole Single Throw).
2. Four different colors of 18 gauge wire.
3. Four female spade connectors.
4. Fuse holder if desired.
5. Shrink wrap.
6. Wire ties.
7. Double sided tape.
8. Solder.

The Relay that I used was from OíReillyís and was less than three bucks. See picture 1. It is made by MasterPro and the number is R682, however, any DPST relay will work if it has a NO (normally open) and a NC (normally closed) side to the circuit. This relay has five tabs on it. See picture 2. Tab 85 and 86 are the coil tabs, this is where you will hook up the wires to energize the relay, one is grounded the other is from the headlight power, polarity on the tabs is unimportant. Tab 87a is the NC tab that gets the wire that goes to the yellow wire on the horseshoe connector. Tab 30 is the tab that gets the key on power wire from the orange wire on connector two. All this will be better explained as we get into the install. These relays are plentiful as they are used by many auto alarm installers, you can find them online for less than a buck and a half. I got mine from OíReillyís because my grandson is a manager there. By the way if you want to wire something to the NO side that is not used in this application it will come on whenever your headlights are on. If you just want your Fog Lights to come on all the time, even at night with the headlights, the process is simple. Run a key on powered wire to the yellow wire on pin 17 on the horseshoe connector and your done. However, if you would like to remain friends with all those you meet at night we need to do a little more work.

Take the relay, the four female spade connectors and prewire the relay. Use about 18 inches of wire for each tab. Connect the wire to the spade connector (I soldered then shrink wrapped mine) and put one wire on each of the tabs 30, 85, 86, and 87a (if you used different colored wires write down which color is on which tab). I then put some double sided tape on the relay for mounting it to the dash brace.

Disconnect both batteries.

Remove the fuse panel cover that is just in front of your knees when you sit in the drivers seat.

Remove the four 10mm bolts that hold the fuse panel in the dash.

Pull the fuse panel out of it nesting place, this may require a bit of work because it is kind of a tight fit and it has all the wires connected to it.

Once you have the fuse panel out you will see a horseshoe shaped pull ring on a connector on the right side of the panel. See picture 3. This is the connector that has the Fog Light Relay wire on it. It is the yellow with red/orange tracer wire that is on pin number 17. See picture 4.

Just behind this connector you will see a connector that is smaller and has four wires going to it. See Picture 5 The orange wire is a key on power source. The Red with black tracer wire is a headlight on power source.

Pull the small connector with the four wires out of the fuse panel, there is a small release tab on the back side of the connector. Use the needle nose pliers and remove the red locking tab that is in the center of the connector. Use the very very small screwdriver to release the thin metal tab on the orange wire end to remove it from the connector. This may be a bit difficult until you get the hang of it. If this is to difficult to do I think the use of scotch locks in this case would be acceptable as we are in a weather protected environment. After you have soldered the wire from the #30 tab on the relay to the orange wire push it back into the connector (this is the power for the relay wire).

Remove the red with black tracer wire from the same connector. Solder the wire that comes from the #85 tab on the relay to this wire then replace it in the connector (this is the headlight on trigger wire). Push the red locking tab back into the center of the connector. Replace the connector into the fuse panel.

Your half way done.

Remove the horseshoe connector from the fuse panel, remove the red locking tab, remove the yellow with red/orange tracer wire in position 17 from the connector. Solder the wire from tab #87a on the relay to the wire and replace it into the connector (this is the wire to power the Fog Light Relay). Replace the red lock tab into the connector then replace the connector into the fuse panel.

Ground the wire that comes from the relay tab #86.

Reinstall the fuse panel, the cover, reconnect the batteries and test the system.

You should have the Fog Lights come on as soon as the key is turned to the run position, and the Fog Lights should go off as soon as the head lights are turned on. The stock factory lighting functions just as it did when stock except for the new cheap DRLís.

Enjoy and drive in safety.

LargeCar:Thumbup: :Thumbup: :Thumbup:
Attached Thumbnails
Click image for larger version

Name:	Relay.jpg
Views:	169
Size:	83.5 KB
ID:	4420   Click image for larger version

Name:	Relaytabs.jpg
Views:	129
Size:	53.5 KB
ID:	4421   Click image for larger version

Name:	Pullring.jpg
Views:	146
Size:	92.5 KB
ID:	4422   Click image for larger version

Name:	Pins.jpg
Views:	115
Size:	69.2 KB
ID:	4423   Click image for larger version

Name:	connectors2.jpg
Views:	112
Size:	72.8 KB
ID:	4424  

Click image for larger version

Name:	Assembly.jpg
Views:	147
Size:	112.0 KB
ID:	4425   Click image for larger version

Name:	powerwiredetail.jpg
Views:	125
Size:	61.5 KB
ID:	4426  

LargeCar

Mafia # 19 The Dually Club # 19

If a country does not remember and honor its fallen heroes of the past, in the future that country will not be honored or remembered.

G.R. Wemmer

A veteran is someone who, at one point in his/her life wrote a blank check made payable to 'The United States of America' for an amount of 'up to and including their life.' That is Honor, and there are way too many people in this country who no longer understand it.
LargeCar is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome