DIY Daytime Running Lights for the EF chassis
I posted this on another board in responce to a post, but I thought my H-T peeps would enjoy it as well. This was on H-A.net.
Here is a quick and dirty wiring diagram. This setup wired as shown about will allow your bumper lamps to with your head lights. I included the extra relay connected to the high-beams that will shut them off when you click on the high-beams. You don't have to use this function, I just thought it was neat.
Here are some notes.
1)
You can remove the high beam relay without bothering the circuit. It's just there if you wanna simulate the bumper lights being fog lights. DOT regs in most states require that your fog lights switch off when your high beams come on. Though I doubt most places that inspect car are gonna care about it. -- You can subsitute any 12v switched source for the high beam trigger, if you wish to be able to turn your park/DRL lights off. Most GM vehicals DRLs shut off when the parking break is pressed, it wouldn't be that hard to integrate this feature into the circuit.
2)
If you want the circuit on with your park lights, all thats necessary is that you switch the low beam 12v signal to a 12v signal from your park lights. For the Daytime Running light approach wire the aforementioned circuit to an "ON with igniton" source. Basically any 12v source can be used on this leg of the circuit as the trigger for your lights to come on.
3)
The reason the low filiment is used for the park light function is b/c if you wouldn't be able to see turn signal if it was wired to the high filiment.
4)
The reason this setup uses relays is that the stock wiring system won't support more load on the park light system w/o just not working at all. You could staight wire the bulbs to the head lights but I didn't think that was very safe or clean.
5) You can pick the relays up here for you internet shut-ins, they also have wiring harness. Or at your local radio shack. The sockets are just std 1157 dual filiment bulb sockets, easy place to source them from would be from the tail lights of most Honda's.
[Modified by Speed PHreak, 2:52 PM 2/28/2003]
Here is a quick and dirty wiring diagram. This setup wired as shown about will allow your bumper lamps to with your head lights. I included the extra relay connected to the high-beams that will shut them off when you click on the high-beams. You don't have to use this function, I just thought it was neat.
Here are some notes.
1)
You can remove the high beam relay without bothering the circuit. It's just there if you wanna simulate the bumper lights being fog lights. DOT regs in most states require that your fog lights switch off when your high beams come on. Though I doubt most places that inspect car are gonna care about it. -- You can subsitute any 12v switched source for the high beam trigger, if you wish to be able to turn your park/DRL lights off. Most GM vehicals DRLs shut off when the parking break is pressed, it wouldn't be that hard to integrate this feature into the circuit.
2)
If you want the circuit on with your park lights, all thats necessary is that you switch the low beam 12v signal to a 12v signal from your park lights. For the Daytime Running light approach wire the aforementioned circuit to an "ON with igniton" source. Basically any 12v source can be used on this leg of the circuit as the trigger for your lights to come on.
3)
The reason the low filiment is used for the park light function is b/c if you wouldn't be able to see turn signal if it was wired to the high filiment.
4)
The reason this setup uses relays is that the stock wiring system won't support more load on the park light system w/o just not working at all. You could staight wire the bulbs to the head lights but I didn't think that was very safe or clean.
5) You can pick the relays up here for you internet shut-ins, they also have wiring harness. Or at your local radio shack. The sockets are just std 1157 dual filiment bulb sockets, easy place to source them from would be from the tail lights of most Honda's.
[Modified by Speed PHreak, 2:52 PM 2/28/2003]
there is a relay that the 90-91 canadain civic/crx have that you plug in under your dash and automatically goes on...
there is a relay that the 90-91 canadain civic/crx have that you plug in under your dash and automatically goes on...
well this is what i was told by my canadain friend, who took it out of his crx...he said all i had to do was stick it in a slot under my dash...oh well...
hmmmm...that is a good illustration. but when you wanna turn the signals on will they still blink ??
so you need 1 relay (what kind)...... you need to get sockets (i thought the front bumper lights are already 1157 ??
what and where is the low filament wire??
[Modified by zcivicz, 4:10 PM 3/1/2003]
[Modified by zcivicz, 6:36 PM 3/1/2003]
so you need 1 relay (what kind)...... you need to get sockets (i thought the front bumper lights are already 1157 ??
what and where is the low filament wire??
[Modified by zcivicz, 4:10 PM 3/1/2003]
[Modified by zcivicz, 6:36 PM 3/1/2003]
yeah it is kinda vague, bumper or front corner lights? relay is shown but if you remove the high beam relay isn't it the same as the one your adding in?
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hmmmm...that is a good illustration. but when you wanna turn the signals on will they still blink ??
so you need 1 relay (what kind)...... you need to get sockets (i thought the front bumper lights are already 1157 ??
what and where is the low filament wire??
what and where is the low filament wire??
yeah it is kinda vague, bumper or front corner lights? relay is shown but if you remove the high beam relay isn't it the same as the one your adding in?
aight i got a copy of that diagram, i'm getting some relays and a harness for them from that site you have listed in your post. thanks for the info man. it's definately good to know. i'm installing them asap.
thanks for straightening that out! i just wanted to make sure that they will still blink and i'm on my way to radio shack for that relay. sweet topic!!!
I have a twilight sentinel module out a caddy thanks to davesmed. The photocell senses when it is night time, and turns on the headlights. It needs to be dark for something like 15 seconds to compensate for things like going under a bridge etc. It also has a adjustable delay, so when I turn off the car the headlights will stay on for a set amount of time up to 3 minutes I think.
Photocell mounted in the cluster hood

Timer/Automatic Headlight Control

http://wiki-shorts.freestat.pl....html
On an automobile, 'Twilight Sentinel' is a device on General Motors' cars that senses outside light and turns the headlights on and off depending on lighting conditions.
In addition, Twilight Sentinel also allows the driver to set a timer (located with the headlight switch) that delays shutting off the headlights for a specified time period, usually up to three minutes. The driver can park his/her vehicle, shut off the car's engine and exit the automobile after dark, then use the headlights to light his/her path into a nearby building, such as a house, before the system shuts the headlights off automatically.
An electric photocell located in the dashboard detected lighting conditions and activated the headlights as appropriate. Usually, this would mean turning on the headlights at dusk and shutting them off after sunrise. During daytime driving, the photocell would be able to keep the headlights off when driving under a bridge, through a short tunnel, etc.
However, Twilight Sentinel does NOT automatically shut off the headlights 'if' the driver manually turns the headlights on (he/she must manually turn the headlights off), nor does it turn on the exterior lights for driving conditions such as heavy rain or fog.
Photocell mounted in the cluster hood

Timer/Automatic Headlight Control

http://wiki-shorts.freestat.pl....html
On an automobile, 'Twilight Sentinel' is a device on General Motors' cars that senses outside light and turns the headlights on and off depending on lighting conditions.
In addition, Twilight Sentinel also allows the driver to set a timer (located with the headlight switch) that delays shutting off the headlights for a specified time period, usually up to three minutes. The driver can park his/her vehicle, shut off the car's engine and exit the automobile after dark, then use the headlights to light his/her path into a nearby building, such as a house, before the system shuts the headlights off automatically.
An electric photocell located in the dashboard detected lighting conditions and activated the headlights as appropriate. Usually, this would mean turning on the headlights at dusk and shutting them off after sunrise. During daytime driving, the photocell would be able to keep the headlights off when driving under a bridge, through a short tunnel, etc.
However, Twilight Sentinel does NOT automatically shut off the headlights 'if' the driver manually turns the headlights on (he/she must manually turn the headlights off), nor does it turn on the exterior lights for driving conditions such as heavy rain or fog.
For those interested in making the turnsignals DRLs, If you wanted them to have full brightness (think late model GM F body) you could probably do it using two relays, and a fused ignition controlled power lead. cut the wire going into the turn signal, and take the lead going to the bulb and put it on pin 30 of your 5 pin relay. Put the lead from the cars harness on pin 85. ground pin 86. Put your ignition controlled fused lead on pin 87A.
Essentally, this will make that light do the opposite of whatever the rest of that circut is doing, so normally, its on. When you turn, it will flash in opposite sequence (i.e. off when the back one is on, and vice versa, but the important thing is it flashes).
If you wanted them to revert to normal operation when you turn your lights on (or if your Twilight sentinel does it for you...
) you could add a relay on each side to accomplish this. Wire pin 85 to whatever you want to control the DRLs, be it the running lights or headlights. Ground 86. Move 12v fused lead from pin 87A on old relay to Pin 30 on the new relay. Wire 87 on the new relay to 87 on the first relay, and 87A on the new relay to 87A on the first relay.
This diagram reflects one side of the headlight (or parking light) controlled DRLs.
Essentally, this will make that light do the opposite of whatever the rest of that circut is doing, so normally, its on. When you turn, it will flash in opposite sequence (i.e. off when the back one is on, and vice versa, but the important thing is it flashes).
If you wanted them to revert to normal operation when you turn your lights on (or if your Twilight sentinel does it for you...
) you could add a relay on each side to accomplish this. Wire pin 85 to whatever you want to control the DRLs, be it the running lights or headlights. Ground 86. Move 12v fused lead from pin 87A on old relay to Pin 30 on the new relay. Wire 87 on the new relay to 87 on the first relay, and 87A on the new relay to 87A on the first relay. This diagram reflects one side of the headlight (or parking light) controlled DRLs.
my DRL lights on my 90 CND dx are the low beam's i want to alter that so they are the highbeam's i know most civics are like this from 90-91 .. but why is mine differnt. ? what would be the easiest way to change this over from low to high's ?
-Rob-
-Rob-
i need help!
since my car already has DRL i must already have a light relay wired up to my low beams . where can i find this relay ... i guess all i need to do is just re wire it for the high beams instead of the low beam's right ???
help soon as possible would be great!
since my car already has DRL i must already have a light relay wired up to my low beams . where can i find this relay ... i guess all i need to do is just re wire it for the high beams instead of the low beam's right ???
help soon as possible would be great!
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EF4Baller
Honda CRX / EF Civic (1988 - 1991)
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