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Looking to use these for my front running lights, and these for my brake lights. The 1157's look nice, but I'd definitely prefer something bright to hopefully help make the car a bit safer.

Do I need resistors?
The front bulbs you show look like a single filament. You need a duel filament for park lights AND turn signals. You will probably also need an electronic flasher (or flashers if you have a newer wiring harness.)
 
Looking to use these for my front running lights, and these for my brake lights. The 1157's look nice, but I'd definitely prefer something bright to hopefully help make the car a bit safer.

Do I need resistors?
you will need an electronic flasher most likely. if you leave some incandescents in the circuit, its normally fine, but with all led's they will likely exhibit some type of abnormal behavior.
 
I don't have any experience with the LEDs you mentioned, but I have had a great experience with these LEDs from superbrightled.
Seven years since I put them in and they still work great.

From my build thread.

Lets start with tail lights , signal lights , license plate lights and back up lights.
Dash lights have also been purchased and will be changed over on a later post.

Well, here they are LED 1157`s.


They are red and look better in person than in the photo.
Was using the brighter 1158`s but they made the tail light look pink.


Now the turn signals are impressive.
The bulb looks weird but they are hidden behind the lens.
They are white in park mode...


and they are Amber in turn signal mode...
( they are more amber in person)


Now of course it wasn't that easy.
I broke one of my turn signal pigtails and the brake lights were destroyed as the sockets had corroded to the bulb.
( and they are only two years old.)
Also had to change the flasher to an electronic version.


Part numbers...
superbrightleds.com
2. 1157-R3W-G: Red ( Tail lights )
2. 67-CW12-G: Cool White ( License plate lights , 2 for a wagon )

2. 1157-AW60-SA: Amber White ( Front parking light, white for park ,amber for signal )

Dimable lights
9. BA9S-CWHP5: Cool White ( dash lights )
2. BA9S-GHP5: Green ( signal lights )
3. BA9S-RHP5: Red ( oil, generator and high beam ) ( almost went blue for high beam )
2. 1156-CW3W-G: Cool White

The dash lights don't dim much.
There may be better dimming LEDs out there.
 
Also from my build thread...

One step forward, two steps back. Installed the LED dashlights. They look great!

on bright...



on dim... They really don't dim much, they just go out when the voltage drops below 9V.



Now for the two steps back. Step one, the bright lights show all the flaws in the lenses.


Step two, when the signal indicator lights were replaced the flasher quit working. Need a different flasher or add resistance to the circuit. Ordered line load resistors from superbrightleds.com. That way the original flasher can be used.

Still happy with the outside lights. ( Now the headlights look a little out of place. :) ) The dash lights are more of a sideways move so far. Although they should last a lot longer than incandescent bulbs. The dome light should also be much brighter. One thing to remember is the cool white bulbs are very white as compared to incandescent bulbs which look brownish. Makes the interior colors stand out. ( Whiteness is measured in Kelvin, the higher the Kelvin the whiter. Learned that when I rewired the house and installed LED bulbs with a 5000 Kelvin rating. I really like them and could never go back to "warm" color bulbs in the house.)
.

Note: be sure to order the right color bulb for the application.
For example; A white bulb in the taillights will look pink because the light produced is so strong it over powers the red tint in the lens. Use a red LED in the taillights and it will look better.
 
I bought some from superbrightleds and the red rear ones are great but the front ones were too bright. This could easily be my fault because I thought the front and rear both take 1157 bulbs. I don't know where I got that idea? The ones I tried were amber. Superbright excepted returns easily and issued a refund. Good company to deal with. Now this makes me want to order the proper ones, although with the current amber 1157's they are bright and I don't need a special flasher.
 
Looking to use these for my front running lights, and these for my brake lights. The 1157's look nice, but I'd definitely prefer something bright to hopefully help make the car a bit safer.

Do I need resistors?
If you get some dialectic grease and put on the contacts and it will keep the contacts clean and the lost of contact on the bulbs
 
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