Forum Discussion

Effy's avatar
Effy
Explorer II
Jan 13, 2014

LED replacements for incan. tail/turn lights

Anyone ever replace their 3157 incandescent rear tail and turn signal lights with LED's? Where did you get them and how do you like them? There are quite a few bulb options out there, so I am a bit confused as to which ones I should buy? The 3157's are dual filament so can I assume the LED replacement has 2 groups as well? (one running/brake and one running/turn). The 3156 is just backup so that can probably stay incandescent.

27 Replies

  • Depending on what configuration your tail lights are.......one idea is to replace the whole tail light with a LED designed tail light........

    I just did this to my Bounder as the original tail light sockets were just worn out......

  • Effy wrote:
    JimM68 wrote:
    I've looked into it but...
    There's just nothing to be gained.
    The bulbs cost a lot more. Particularly if you are replacing bulbs that still work.

    Since your engine is running and alternator is making power while you are using these lights, the reduced current draw of the LED's is a non factor.

    I've replaced nearly all the interior lighting in our rig with LED's, some of it twice (looking for just the right combination) Hope of course is to reduce the load on the batteries when boondocking, stretch the time we can go without running the genny.

    Exterior and running lights and such, just nothing to be gained there.


    I do have one out and was thinking of replacing. I understand there is no advantage to electric use, I was actually thinking of safety. The LEDs react faster and are brighter than the incandecants so I was thinking it would make it more visible. My dolly has LEDs and they are considerably brigher than the filament type. Hence why I guess most new cars and even MH's are coming with LED signal brake and running lights. Brighter = safer and of course last longer.
    It is hard to find quality LED bulbs that offer a proper wide angle viewing area. Most have a major drop off when viewed from a side angle. Only brighter when viewed straight on. There are some on the market available in the light housing that should be of good quality, The housing and reflector area are properly designed with a specific LED unit. See Bargman Lighting.

    If you do go with bulbs, make sure you stay with high quality ones that are towered with side leds. http://www.superbrightleds.com/cat/tail-brake-turn/filter/Cross_Reference_Number,1157,21,195:
  • RoyB's avatar
    RoyB
    Explorer II
    The LED driving lights on the trailers will give you some serious lights. Most all of the truckers now use LED lights.

    I would only change mine if I wanted to increase my driving lighting performance.

    As stated above these will be operated from your vehicle start battery system and not be involved in any high current savings you might want to get from draining your coach batteries.

    LEDTRAILERLIGHTS and ETRAILER are two places I can think of that has LED LIGHTS for the RV trailers exterior lights.

    Roy Ken
  • Effy's avatar
    Effy
    Explorer II
    JimM68 wrote:
    I've looked into it but...
    There's just nothing to be gained.
    The bulbs cost a lot more. Particularly if you are replacing bulbs that still work.

    Since your engine is running and alternator is making power while you are using these lights, the reduced current draw of the LED's is a non factor.

    I've replaced nearly all the interior lighting in our rig with LED's, some of it twice (looking for just the right combination) Hope of course is to reduce the load on the batteries when boondocking, stretch the time we can go without running the genny.

    Exterior and running lights and such, just nothing to be gained there.


    I do have one out and was thinking of replacing. I understand there is no advantage to electric use, I was actually thinking of safety. The LEDs react faster and are brighter than the incandecants so I was thinking it would make it more visible. My dolly has LEDs and they are considerably brigher than the filament type. Hence why I guess most new cars and even MH's are coming with LED signal brake and running lights. Brighter = safer and of course last longer.
  • I've looked into it but...
    There's just nothing to be gained.
    The bulbs cost a lot more. Particularly if you are replacing bulbs that still work.

    Since your engine is running and alternator is making power while you are using these lights, the reduced current draw of the LED's is a non factor.

    I've replaced nearly all the interior lighting in our rig with LED's, some of it twice (looking for just the right combination) Hope of course is to reduce the load on the batteries when boondocking, stretch the time we can go without running the genny.

    Exterior and running lights and such, just nothing to be gained there.
  • Under the heading of general info one filament is running right and the other filament is brake/turn.