Team-BHP - Auto Lighting thread : Post all queries about automobile lighting here

Quote:

Originally Posted by swarnava.m (Post 2862455)

This one might be a little weird.

I have a few of the blue LED parking light (wedge type) lying around. I want to attach them to the rear co-axials. What I mean is, I want to wire them up to the same wires that connect to the speakers, so that they light up when the speakers are powered. The speakers are in the boot. The purpose is nothing but just adding to the bling factor. :)

Two questions.
1. Will this work? Can the bulbs be lit by the power coming through the speaker signals from the HU?
2. Is it safe? I have two doubts regarding this. Firstly, is there a chance that the current through the wires would blow the LEDs? Secondly, will the low resistance of the bulb cause a short in the speaker wires, and thus blow the fuse in the HU?

Thanks in advance. clap:

You will be lucky if the current blows up the LEDs, as I feel that the opposite will happen. Though I cant explain in theory perfectly, please stay away from such a thing. LEDs are diodes which have a specific knee voltage. Untill the voltage reaches the knee level, they act as open circuits. Once the input to the LEDs crosses the knee level, say 0.7V, they act as short circuits, with practically very very less resistance. That, I feel is good enough to blow the HU. As there is a sudden surge in current across the LED for a minute increase in signal voltage.

If the above theory is stupid, then at least your sound output will change stupid:

Quote:

Originally Posted by bharat4ever (Post 2863062)

I had 4300 HIDs on my K2 i10 and changed them to OSRAM's night breakers yesterday.

Disadvantages of HIDs which i faced.

1. Very bad visibility when it rains heavily.
2. The lights actually reflect off the water layer on the roads which leads to less visibility.
3. Even in normal conditions high beam throw is bad.

Maybe it was just that the headlights of the i10 are not built for HIDs.

No matter what light you have, visiblity during rains is quite poor not because light reflects off the water layer but the road is pitch black which does not reflect any light.

Quote:

Originally Posted by bharat4ever (Post 2863062)

HIDs in stock reflectors?
youre bound to get more of scatter, less of focus.

There are 2 issues with bulbs of 2008 wagonR:
1. front right bulb works only on high beam. i can see a tiny bulb working properly though(on the lowermost corner of headlamp).
2. brake lights not working on rear right bulb, although the night light does work.

Not sure if only these bulbs needs to be replaced or wiring is to be fixed.
in case only bulbs are problematic, does it make sense to replace all bulbs so as to avoid further issues (like battery damage).
any recommendations?

Lately, I am feeling that the MASS center at mundhwa is interested in inflating the servicing bills.
So any pricing details would surely help me to keep tab on service centre guys :)

Quote:

Originally Posted by chetans (Post 2864169)

1. front right bulb works only on high beam. i can see a tiny bulb working properly though(on the lowermost corner of headlamp).
2. brake lights not working on rear right bulb, although the night light does work.

1. Could be the parking light bulb.
2. Replacing bulbs in brake lights is easy. Just check if it is a combined with the parking light, then you will have to get a dual filament bulb. The exact nos should be in the user's handbook. A WagonR being a common animal the parts dealers should also know.

Quote:

Originally Posted by akshay4587 (Post 2865145)

Is it safe to open a headlight and reseal it for retrofitting of a Projector.
I have been toying with this idea,however,the fact that headlights might get ruined due to water and other elements puts me off.

Make sure you open the headlights in some clean area free from dust. I have opened my headlights to rectify a problem with my projectors. Once done, seal the headlight casing using silicon gel or any other sealants. You might observe formation of mist inside the assembly for couple of days. This is due to the air trapped inside. Will be normal after couple of days. The main thing is to seal it properly. Else water might seep in.

Quote:

Originally Posted by naveen.raju (Post 2865163)

Thanks a Lot,another query,is this process reversible?
As in if i want to get back to halogens,will i be able to do so,using the same headlamp unit?

Quote:

Originally Posted by akshay4587 (Post 2865173)

Thanks a Lot,another query,is this process reversible?
As in if i want to get back to halogens,will i be able to do so,using the same headlamp unit?

As long as you dont cut the reflectors you can bring it back. There are projectors that can fit onto the existing holder position Just remove the stock holders and fit the projectors. In some, you need to cut the holder portion to fit the bigger projectors. It basically varies depending on the projectors. If you are planning to come back to halogens in the future, just try getting these. I have seen many cars with this. Just double check this.

Quote:

Originally Posted by naveen.raju (Post 2865186)

Thanks again,and one last queryclap:
this is going to be for a linea,which has a twin HL setup.
what kind of projectors and HID should i be looking for.
and i am thinking of retaining halogen for the high beam.
Makes sense?

Quote:

Originally Posted by akshay4587 (Post 2865206)

Not sure about the projector specs. Basically, you need to check the bulb configuration. Different projectors have different bulbs configurations. For instance, my Swift stock runs on H4 but my projectors run on H9. Many make this mistake. They buy HID's before getting the projectors based on the stock bulb configuration. When they get the projectors, this might have a different configuration. So just check the projectors before getting the HID's.

This kind of setup is very common for example Laura got this similar setup.
Projectors - Low Beam
Normal Halogen - High beam

Go for 4300k HID's if you looking for the best visibility output.

Need help friends.

I have VW Vento with PMP Relays and Philips 100/90 bulb.

Today it happened, while driving there was no low beam, only high beam in LHS. RHS bulb was having just slight illumination. Checked the two fuse in the relay. Both of them were slightly melted.

Changed them. Low beam now works for LHS and even high beam. But RHS, absolutely nothing. Just slight illumination(equivalent to that of a burning candle).

So what could be the problem. Is the relay gone bad or the bulb is out. The filament on the bulb looked intact to naked eye. Bulbs are just 5 months old, Philips EssentialVision 100/90.

Thanks.

Quote:

Originally Posted by el lobo 6061 (Post 2865962)

Need help friends.

So what could be the problem. Is the relay gone bad or the bulb is out. The filament on the bulb looked intact to naked eye. Bulbs are just 5 months old, Philips EssentialVision 100/90.

Did you try switching the bulb from the LHS to the RHS and then check...
Also, not so sure about the Vento, but in other vehicles I've had, there's usually at least two fuses per bulb.
Also, I'm not sure about the relay that may have been installed along with the harness when you upgraded to the 100/90.