"Driving lights" as Daytime-use running lamps - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > "Driving lights" as Daytime-use running lamps

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineOconeeoffroad.com Prothane bushing sale Blowing out inventPoison spyder items @ oconee off road 706 534 9955

Reply
Unread 01-16-2010, 10:40 AM   #1
csouers
Registered User
1999 XJ Cherokee 
 
Join Date: Feb 2008
Location: Bloomington, Indiana
Posts: 2,027
"Driving lights" as Daytime-use running lamps

I'm pondering around the idea of throwing on a pair of cheap driving lights from wal-mart or someplace to run with my marker/parking lamps.

My idea is for them to come on ONLY when the parking lights are one, but not with the headlights on. This way they sort of act as DRL's so I can save my headlight bulbs. I have the factory fog-light switch in my XJ, just took off the lights when I hit a deer last May (one was broken into pieces and the other had a burnt bulb. they were lights from k-mart)

I believe that I would have to relay the switch as I'm pretty sure it is not relayed from the factory. As far as wiring it to come on with the parking lamps and turn off with the headlights, I'm not quite sure how I'd do that.

Keep in mind, I'm not going to put big expensive lights, as this is really only for safety when weather conditions are so so.

__________________
1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

My Photography
csouers is offline   Reply With Quote
Unread 01-16-2010, 12:19 PM   #2
talentjeep
Registered User
1987 XJ Cherokee 
 
Join Date: Oct 2009
Location: talent,or
Posts: 1,226
in my state is legal to run fog lights anytime the brights are not being used on the headlamps.

i'd just wire up a switch and away you go. I guess you could put a relay into the parking lamp circuit or something so it would switch on the fog lights automatically if you wanted. the problem is you can't turn on headlights without parking lights so you would have to manually switch the relay off somehow for when you were running with headlights.

Quote:
Originally Posted by csouers View Post
Planned: Entire new exhaust with flexible exhaust manifold
Not to jack your thread...but flexible? Where can I get this?
__________________
'87 XJ Pioneer with 32" KM2s, etc.
talentjeep is offline   Reply With Quote
Unread 01-16-2010, 01:04 PM   #3
csouers
Registered User
1999 XJ Cherokee 
 
Join Date: Feb 2008
Location: Bloomington, Indiana
Posts: 2,027
ya. i'm not sure how I would wire up the off part with the headlights. who knows, it might not even be possible.

I know some people make them. They're not "flexible" per say, but they make replacement manifolds that have some kind of flex pipe type thing on the pipes. Quadratec sells one. Original Replacement Parts 4883385K - Exhaust Manifold Kit for 97-99 Jeep® Wrangler TJ, 91-99 Jeep® Cherokee XJ & 93-98 Jeep® Grand Cherokee ZJ with 4.0L 6 Cylinder Engine - Quadratec
__________________
1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

My Photography
csouers is offline   Reply With Quote
Unread 02-04-2010, 07:31 AM   #4
csouers
Registered User
1999 XJ Cherokee 
 
Join Date: Feb 2008
Location: Bloomington, Indiana
Posts: 2,027
bumparoo

I know to hook the aux lights to come on with the parking lights but not how to make them go off with the headlights. I suspect that would require some other kind of electrical unit that I'm not aware of.
__________________
1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

My Photography
csouers is offline   Reply With Quote
Unread 02-04-2010, 03:13 PM   #5
Carves
Registered User
1998 XJ Cherokee 
 
Join Date: Oct 2008
Location: Western N.S.W., Australia
Posts: 1,041
Quote:
Originally Posted by csouers View Post
bumparoo

I know to hook the aux lights to come on with the parking lights but not how to make them go off with the headlights. I suspect that would require some other kind of electrical unit that I'm not aware of.
Fused main battery power to a changeover relay ( the same relay as used for most stuff in an XJ )

Battery power out from the change over relay to a normal relay.

Battery power out from the normal relay ( activated by the park light wiring ) to the lights.

Having a connection from the low beam circuit to the change over relay will deactivate the power supply at the change over relay when the headlight switch is fully extended.

Just make sure you understand the terminal connections in the links below.

There is probably other ways to do it as well.


Relay_Info

Relays
Carves is offline   Reply With Quote
Unread 02-04-2010, 05:12 PM   #6
maalox
Registered User
1989 XJ Cherokee 
 
Join Date: Jan 2007
Location: Roanoke, Va
Posts: 15
Automatic/daytime running lights are pretty pointless, especially considering your geographic location. And even if you were far enough north to require use of headlamps during daytime hours, I'm still unsure why it would be so difficult to just switch on the lights.

And it seems to me that you would save yourself a ton of time just turning on the headlights. You're going to have to go through the motion anyway to turn on the parking lights, why not just pull the extra 1/8" to turn on the headlights? If that's too much effort every time you get in the truck, why not relay the headlamps to come on with the ignition?
maalox is offline   Reply With Quote
Unread 02-04-2010, 06:22 PM   #7
csouers
Registered User
1999 XJ Cherokee 
 
Join Date: Feb 2008
Location: Bloomington, Indiana
Posts: 2,027
Quote:
Originally Posted by maalox View Post
Automatic/daytime running lights are pretty pointless, especially considering your geographic location. And even if you were far enough north to require use of headlamps during daytime hours, I'm still unsure why it would be so difficult to just switch on the lights.

And it seems to me that you would save yourself a ton of time just turning on the headlights. You're going to have to go through the motion anyway to turn on the parking lights, why not just pull the extra 1/8" to turn on the headlights? If that's too much effort every time you get in the truck, why not relay the headlamps to come on with the ignition?
The point of all of this is to save my headlight bulbs. It's not that I'm too lazy to pull the extra length.

Safety is the key here. The more visible you are in hazardous conditions, the better. I like to use my lights when it's raining or gray outside. I just feel a bit more safe that way.
__________________
1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

My Photography
csouers is offline   Reply With Quote
Unread 02-04-2010, 06:25 PM   #8
betard_foosier
Registered User
1999 XJ Cherokee 
 
Join Date: Jan 2010
Location: Kansas
Posts: 296
Just put them on fog switch. No reason to save your headlights, you'll just be replacing driving light bulbs instead.
betard_foosier is offline   Reply With Quote
Unread 02-04-2010, 07:06 PM   #9
Trons
Registered User
2003 TJ Wrangler 
 
Join Date: Jan 2010
Location: Bowling Green KY
Posts: 686
You can actually do it with 2 relays. These relays can be bought from any automotive shop, radio shack, or a specialty electronic store.

I'm trying to think of a good way to draw it out because I actually suck with computer graphics but I could if you want me to, send me a PM if the following explanation doesn't cover what I'm trying to convey.

The first relay would be spliced into your running light switch so when you turn it on, it triggers the relay and activates your lights. From that relay, take it to the NC loop of another relay that is triggered from your head lights (when they're on, it would trigger the relay, thus breaking the circuit).

I could draw a diagram in a few minutes on paper, but would need a good way to get it on the computer to post it.

Again, I could do it with MSPaint if needed. Let me know.
__________________
'03 TJ Rubicon
'91 Cherokee Laredo, Stock
'98 XJ burned :(
Trons is offline   Reply With Quote
Unread 02-04-2010, 07:14 PM   #10
csouers
Registered User
1999 XJ Cherokee 
 
Join Date: Feb 2008
Location: Bloomington, Indiana
Posts: 2,027
Are we talking a relay like this?


Also what is the NC loop?

That pic was pulled from this link.
__________________
1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

My Photography
csouers is offline   Reply With Quote
Unread 02-04-2010, 07:26 PM   #11
Trons
Registered User
2003 TJ Wrangler 
 
Join Date: Jan 2010
Location: Bowling Green KY
Posts: 686
Sorry, my knowledge of electronics in general (and relay logic specifically) far surpasses my knowledge of vehicles as of this date and time.

A NC loop is a normally closed loop. Basically, when the relay is sitting in it's normal, untriggered configuration, this loop allows current to pass. A NO loop (normally open) is a loop that won't allow current to pass until triggered by a voltage applied to the trigger mechanism.

In the Diagram above, 86 and 85 are the trigger circuit (wired in such a way that when switch is thrown, it triggers the relay.

30 is known as the common (not to be confused with ground. it's called a common (c) because it's common to both the NC and NO loops). 87a is the NC loop because if the relay isn't triggered, 87a is allowing current to flow and 87 is the NO loop because it won't allow current to flow until the trigger is applied. (this actually changes depending on the application, but we'll use this definition for this example because it's the most common.)

If you were going to use that relay to do what you wanted, you'd need 2.

The first would use the switch for running lights to trigger either 86 or 85 depending on which side is positive and which is ground and whether your switch is switching positive or ground (going a little deep here).

30 would go to your battery + termanal (the lights will be grounded independantly so we'll switch the positive side.

87a be left blank and 87 would go to the other relay.

on the 2nd relay, 86 or 85 would be wired to your head lights (so when they are on, they trigger the relay) and 87 from the other relay would go to 30 with your lights being wired into 87a and 87 would be blank. That way when your head lights come on and trigger the relay, it would break the circuit.
__________________
'03 TJ Rubicon
'91 Cherokee Laredo, Stock
'98 XJ burned :(
Trons is offline   Reply With Quote
Unread 02-04-2010, 07:45 PM   #12
csouers
Registered User
1999 XJ Cherokee 
 
Join Date: Feb 2008
Location: Bloomington, Indiana
Posts: 2,027
That's very descriptive. So if I wanted to switch to enable/disable the lights all together, would that require ANOTHER relay? It seems to me that it would. 1 for the switch itself, another from a parking lamp circuit, and another from the headlamp circuit.

Also, from what you're describing, I wouldn't need a relay with the 87a terminal. I could just get on with the 87 only and be okay?
__________________
1998 Bright Platinum ZJ 5.9 Limited - 5.9l, 46RE, NV-242, D30/44a (Trac-Loc) w/3.73s - The DD
1999 White XJ Sport - 4.0l, AW4, NP-231, D30/8.25 w/3.55s - The Rig

My Photography
csouers is offline   Reply With Quote
Unread 02-04-2010, 07:53 PM   #13
Trons
Registered User
2003 TJ Wrangler 
 
Join Date: Jan 2010
Location: Bowling Green KY
Posts: 686
Actually, the 87a circuit is used on the second relay to turn the lights off when your headlights are turned on.

If you wanted manual control over them to by pass the other circuits, you would need two switches added to the configuration.

If you wanted to kill them regardless, you'd need a switch to interrupt the + to the battery that's being used to provide current to the lights regardless of the state of any of the

Switch A would be put in the line heading to 30 of your first relay above (this switch would be left on to run them as you want and off would kill them regardless of your current light switch.

Switch B would be used to turn them on regardless and would between + battery (assuming grounds at the lights) and tied into the wire coming from 87a and your lights, that way when you threw the switch, it would allow current to bypass the relays and run the lights regardless of the relay configuration.

It can get a little more complicated as you add different configurations. In the above descriptions, Switch B will turn the lights on regardless of the anything else. Switch A will only turn them off if Switch B is off, regardless of the state of your current light switch.
__________________
'03 TJ Rubicon
'91 Cherokee Laredo, Stock
'98 XJ burned :(

Last edited by Trons; 02-04-2010 at 08:15 PM..
Trons is offline   Reply With Quote
Unread 02-04-2010, 08:05 PM   #14
Trons
Registered User
2003 TJ Wrangler 
 
Join Date: Jan 2010
Location: Bowling Green KY
Posts: 686
Ok. now you're getting me confused. I need to reread the above post to troubleshoot. There's something wrong with it and not sure what...give me a moment.
__________________
'03 TJ Rubicon
'91 Cherokee Laredo, Stock
'98 XJ burned :(
Trons is offline   Reply With Quote
Unread 02-04-2010, 08:08 PM   #15
Trons
Registered User
2003 TJ Wrangler 
 
Join Date: Jan 2010
Location: Bowling Green KY
Posts: 686
Ok, above configuration should be correct. If you combine the 2 relays and 2 switches, it would do what you want.
__________________
'03 TJ Rubicon
'91 Cherokee Laredo, Stock
'98 XJ burned :(
Trons is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.