xumengpeter

I read some threads here and bought two kinds of LEDs for my map light, the links are here..
http://cgi.ebay.com/ebaymotors/2pcs-...item2eb696783f

http://cgi.ebay.com/ebaymotors/2pcs-...item2c5f7a9f1b

so now I have four these LEDs ,but none of them will light up.. anybody knows why?

thanks in advance.

TunerMaxima3000

iTrader: (4)

Those are all garbage. PM me I'll send you a real map light that will work.

As far as your immediate issue, does your old bulb work?

lake985

iTrader: (7)

you need something like this: http://cgi.ebay.com/ebaymotors/LED-L...item4cf8e934bc rather than the ones with the ba9s base already attached to the led bulb.

tigersharkdude

iTrader: (20)

I will recommend this too. I have a 20smd panel in my map, 36 in dome, and 12 in both doors. All from china, and all of $3 each

gjaa

Just reverse the polarity on the LED, that will do, just cut the wires and clip them together again backwards

xumengpeter

@TunerMaxima3000
yeah my old bulbs work~


OK..I`ll try the one in the link.. will take another 2-3 weeks for them to arrive..

DennisMik

iTrader: (2)

The map light socket is wired reverse polarity from all the other sockets. The center contact is ground and the sides are +12 volts, so cheap leds don't work. If you pay the big bucks for a lamp from SuperBriteLed, it works either way. I've often wondered how they do that.

TunerMaxima3000

iTrader: (4)

Cutting the wires is the only way to do this unless you buy the ones with universal connectors

^I didn't know that? Are you sure?

The MAP light is for sure ground triggered so I suppose it's possible. They do it one of two ways, the universal adaptor is reversable, OR, they use a series of diodes to allow the LED's to function the same way a incandecent does, that's how many of the sealed LED's are wired.

tigersharkdude

iTrader: (20)

You do NOT have to clip the wires behind the MAP. When you get the SMD panel simply plug the two connectors together like this
P>>>G
G>>>P

i know for a fact that this works

DennisMik

iTrader: (2)

Yes. My 94 was, my 97 is and my 2K is. I would think that your 01 is too, but if a change was made, it wouldn't be until the 5.5 gen.

Shinjiduo

iTrader: (106)

All you have to do to get the light to work is to either use a soldering iron to pull the LED out and switch the polarity of the bulb or on the connector take off the cover that is in plain view off the front of it and use a narrow pin to pull the connector pins out and switch them around that way you don't have ghetto spliced wires when you don't have to.

DennisMik

iTrader: (2)

I don't think you can do that for a map light. You may be thinking of the wrong type of socket.



The one on the left goes in the map light. I'm wondering if you are thinking about the one on the right.

Rochester

iTrader: (3)

The Maplight uses a bayonet-bulb design, so you can't just turn the bulb around, like you can with wedge-bulbs. If your new LED bulb doesn't light up, then simply cut the harness wires and crimp them back together again swapped. Did it myself about 2 years ago.

It's not rocket science.

TunerMaxima3000

iTrader: (4)

Which is why I said then you can do what you said and just swap it at the connector.

There is a difference on the 5.5. Theyre's also a difference from sunroof to no sunroof, but I don't think that difference changes actual wiring designation. Anyways it doesn't really matter, if it's backwards just switch it

True true, just make sure you pull the fuse or disconnect the battery before wiring, that MAP light is surprisingly high Wattage, and if it surges weird and shorts out you could potentially fry the SECU, rendering pretty much all the extras in your car useless, including the keyed entry and alarm.

Also, why bother with any of it when you can just buy a LED board with universal plug? They're way better for the MAP light application anyways

xumengpeter

I'll go and buy some led with various connectors...thanks guys!

DennisMik

iTrader: (2)

My 97 does not have a sunroof and my 2K does. Its just a one lamp versus 2 difference.

The incandescent lamp is a 10 watt bulb, the the design is so nice. Try to change a bulb and you need a $200 module. Marketing genius.

TunerMaxima3000

iTrader: (4)

^LMAO yup good call Nissan.

Skyladyzx

Just reverse polarity works fine

Prophecy99

iTrader: (1)

is it that easy?? some one please spoonfeed me, i never swapped many obscure LEDs , so tuner is saying i dismantle this from the base and cut and swap harness wires??

i have only converted turnsignals, Daytime running, and ignition key ring, and door courtesy lights, so far and they were all plug and play but i went out and bought everything else map lights, dome, gauge, and trunk and heres what happened...

dome worked fine, and map and trunk did not...

to stay on topic, why did my LEDs not work for the maps then... just the polarity??
heres what i bought ->https://www.superbrightleds.com/more...ofit-car/2077/


thanks for any help! i didnt think the lights i bought were duds....

Prophecy99

iTrader: (1)

so it looks like I bought polarity sensitive, and not non sensitive ... so is what tuner is mentioning is what I do to my bulbs to get them to work?,

or should i return and just get the right non polarized ones?

DennisMik

iTrader: (2)

Whether you cut and splice wires or get another led is a personal call. Cut & splice is quick and cheap, while getting a different lamp is much neater.

Flip a coin.

Prophecy99

iTrader: (1)

thanks, I am going to get a non polarity sensitive LED . superbrightleds are free return shipping and full refund... so i guess it pays to go with name brand retailers, a return on ebay seems not even worth it no matter what the cost of the product.

thanks Dennis.

Prophecy99

iTrader: (1)

moral of this thread in 2015..... make sure you get non-sensitive polarity LED's because these map task bulbs are reverse polarity and regular polarity sensitive LEDs do not work regardless of direction.

Rochester

iTrader: (3)

Yes. Snip, strip, reconnect... /done

Hey, Prophecy. Blast from the past.