Bill,
This is an issue with all LED bulbs. It is amazing what engineering innovations are coming in to the bulb market these days. I have no doubt that there will be LED bulbs that adequately emulate the light throw patterns of incadenscents in a few years.
The fact that the current bulbs are available in 1156 format is encouraging.
But your comment doesn't actually address the question that I asked.
Tom
In a message dated 4/2/2013 5:51:51 P.M. Pacific Daylight Time, corvallis@peoplepc.com writes:
The lens/reflectors designed for bulbs assume a bulb filament of a specific dimension at a specific place (focus of the reflector.) It is very hard to duplicate this with an aftermarket LED "bulb." You will be disappointed by the results. Bill in Oregon
From: diesel_mercedes@yahoogroups.com [mailto:diesel_mercedes@yahoogroups.com] On Behalf Of audiolaw@aol.com
Sent: Tuesday, April 02, 2013 5:40 PM
To: diesel_mercedes@yahoogroups.com
Subject: [diesel_mercedes] 123 & 126 Turn signals question
I have an entirely different question for you.
I recently replace the left rear light assembly on my 1981 300SD. I found a good, uncracked one on a 560 SEL in the Monrovia PaP yard. I brought it home, took the lens off the plastic frame, washed it thoroughly, washed the lamp housing, let it all dry completely.
After reassembly, and installation of all new bulbs, it fit into my car perfectly, as only a 32 year old Mercedes part can.
But while putting in the new bulbs, I started wondering about LEDs. We are getting superbrite LEDs now that have almost the same light output as an incandescent bulb, but at a much lower current draw.
I wonder whether we can use LED bulbs in the turn signals. I know that some turn signal activators, particularly "of a certain age" (as we say of beautiful women and machines), required enough current draw from the bulbs to activate.
Are the turn signal activators in 123 and 126 series cars able to operate with the low current draw of LEDs? Considering the price of LED bulbs still, I am not excited enough to test them out on my own. But I just know that you folks at the Classic Center will either know the answer, or know who in Stuttgart to get the answer from.
The other Tom: '81 300SD, 37+,+++ miles