I use this to test stuff and determine the polarity of LEDs. Usually the polarity on a panel reads like a book from one end to the other.

 

I'd love to know the polarity of rocker switches and hvac bulbs... Gauge cluster too. Maybe when I replace my cool white cluster bulbs with blue...

 

I use this:

http://www.harborfreight.com/7-funct...ter-92020.html

 

Nice my old multimeter doesn't have a diode tester . I use my adapter to actually power up low amperage parts to see if they function properly before I install
Them.

 

Yeah, I use a 5V one to power some LED's for security cam at night. but use the tester for, well, testing, however for assemblies with resistors they work well.

 

Ok so i have a 98 xj with stock green lighting and i want to change them to blue. Can i just order blue leds or will they be purple? What to i need to do to have them shine blue?

 

I suggest searching for "74 3smd blue led" and looking for one that has three chips on the end of a stick. Color may vary a bit depending on the vendor but generally blue works very well on our xj's. Avoid ice blue though. You need 5 pieces. (But you prob know that already).

 

Ok i just dont want to spend money and blue leds and my gauges come out looking purple. Thnaks for the help. Just to clarify i need 74s for the dash and 194s for the tranny and 4x4 shifter

 

I can't guarantee you'll get the same results, but after doing my instruments this is what I got. The climate control is a custom job tho, as I soldered flexible LED strips inside the enclosure.

The third link in my signature has a lot of good info on specific light sizes and such.

 

Ive had little luck with LED strips in the main cluster, but Im lighting more than the factory numbers. That AC panel looks perfect.

This is the result one of our most recent customers got with is:

 

Looks good. I'd say led strips aren't worth the trouble except in some specific cases, like the 97-01 climate control panel. I suppose adding additional filters might be an additional specific case! The 84-96 hvac panel has its own peculiarity of course... And while it's easy to get it lit up well in standard colors with an LED, I haven't figured any way to get it to light up green while keeping the red part of the display red.

Maybe some cutting and a second light source...

 

Best way i find it to change the filters. When we get our new printer in house, thats gonna be easy.

 

WOW they look so nice.I just went to e-bay and bought the white faces for the gauges and the blue bulbs...take a pic when they are all in.

 

New to the forum, go easy.

I've been looking at all the LED bulbs necessary to replace the bulbs in the HVAC and in the tach, but I just want to make the default/original colors look more bold/vibrant. Would the Green or Warm White LED be better at this?

I've read through this entire thread and honestly can't really make heads or tails of it. Thanks in advance.

 

Since 84-96 and 97-01 climate control assemblies are different, they have different solutions.

The link is to a post of photos of the 97+ with different lighting configs. These are just the ways I've tried.

https://www.cherokeeforum.com/f73/in...5/#post3004364

Also, I have a thread about LEDs in my signature that is another source of info.