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-   -   Parking Brake LED dash light not working (http://www.jeepforum.com/forum/f12/parking-brake-led-dash-light-not-working-1524093/)

CBinDC 05-16-2013 09:09 AM

I upgraded my dash some time ago and have had numerous problems with wiring my LEDs (and gauges). One of my problems is that the Parking Brake light doesn't come on when push in the parking brake. I know the ground is fine because high beam LED and the brake LED use the same ground and the HB light comes on when I activate the HBs. I also checked the back of the LED and the wires look intact.

Before I did the upgrade the Parking Brake dash light worked fine. I looked under the dash to see how the light could be (??) activated. The device that I've singled out does not look damaged or corroded.

Frankly, I really don't know what I'm looking at or looking for. Could it be the brake light switch, relay, corroded wires? Like I said earlier, the light worked fine before I did the "upgrade".

Here is the switch I'm talking about:

http://www.jeep4x4center.com/brake-l...l-3215938.html

Any thoughts? Thanks.

Que89YJ 05-16-2013 09:54 AM

You need to measure the voltage at the led.

JWELK 05-16-2013 11:46 AM

I would suggest the switch is misaligned or unplugged. As it is easier to access, that would be my first point of access.

Michaelgoesrawr 05-16-2013 11:51 AM

There is a switch on your parking brake itself if I'm not mistaken. It's at the top under the dash. There is a single wire going to it. It's this way on my '88 and I cannot see your year on the mobile app so I apologize if this is not the case.

As far as I know the switch you posted is the actual brake light switch for the brake pedal.

CBinDC 05-16-2013 12:25 PM

1 Attachment(s)
Quote:

Originally Posted by Michaelgoesrawr
There is a switch on your parking brake itself if I'm not mistaken. It's at the top under the dash. There is a single wire going to it. It's this way on my '88 and I cannot see your year on the mobile app so I apologize if this is not the case.

As far as I know the switch you posted is the actual brake light switch for the brake pedal.

I have an '89, so the same. I hate the inability to see a persons specs on the mobile app. It's pretty bad. I hope they fix that.

So the switch I posted is the switch for the tail lights? Hmm

On page 5-10 of the manual, it shows a "wire switch connector". I can't find any info on what this for exactly. Is this the possible culprit?

Attachment 627296

I still need to check the voltage at LED though. I can't get to it right now but will later.

Michaelgoesrawr 05-16-2013 12:40 PM

Yes If your voltages are correct when the pedal is pressed and left in the lock position it completes the ground for the parking brake light. It's about the size of the door switches. Just a plunger with a spring and one connector.

CBinDC 05-16-2013 12:52 PM

So I should check if the hot wire to the LED is getting 12v? If not, what next?

Michaelgoesrawr 05-16-2013 12:58 PM

Personally, because I'm not very good with a meter, I'd start at the switch and see if something happened to the wire. Lol

Edit: I forgot you said it worked before. My knowledge is spent on the subject at this point. Maybe que will be able to help you. Sorry bud.

CBinDC 05-16-2013 01:03 PM

Yeah the switch will probably be last thing I check because its probably still good.

Michaelgoesrawr 05-16-2013 01:05 PM

Quote:

Originally Posted by CBinDC
Yeah the switch will probably be last thing I check because its probably still good.

Agreed. The likely hood of the switch going bad when you replace the bulbs isn't very high. Although it with these Jeeps, stranger things have been known to happen.

CBinDC 05-16-2013 01:26 PM

Very true.

Gage56 05-16-2013 01:56 PM

dont want to sound dickish but you sure you have the LED in the right way ? if not try pulling it out and flipping it around to make sure the polarity is right

Que89YJ 05-16-2013 02:02 PM

exactly why I said measure the voltage. If the voltage its there the led is the issue.

Old4X 05-16-2013 03:26 PM

You understand the switch carries the ground, not the hot, right? The bulb should always have power, just needs grounding to light.

CBinDC 05-16-2013 03:31 PM

Quote:

Originally Posted by Old4X
You understand the switch carries the ground, not the hot, right? The bulb should always have power, just needs grounding to light.

Well, I know that without a good ground the light won't work. Am I right?


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