Re: [AMC-List] 65 Marlin Instrument Bulbs

["Keith" <55fordf100@xxxxxxx>]

 Since I had the dash out, I hooked up 12VDC to the dash light circuit. I first checked to see how hot the 168 bulbs (2 CP) got by holding them in my hand. I then did the same with the 192 bulbs (3 CP). The 192 bulbs were warm like the 168's, but not hot to the touch. Certainly not a conclusive test, but I suspect if I can hold them, then the platic indicator covers shouldn't melt (I think). Guess I will find out. BTW, the 192, made the dash backlighting real nice. 

Keith
65 Marlin
San Diego
Re: [AMC-List] 65 Marlin Instrument Bulbs

Date: Friday, December 29, 2006 05:53 PM
From: Arfon <Arfon@xxxxxxxxxxxxxxx>

I've wanted to put LEDs in my panels but it hasn't been high on the list...

The issue with LEDs are that they are not omni-directional.  My 67s have
alot of illumination done through the edge of clear plexiglass (light
pipes).  LEDs just shoot straight up.  Not sure of the answer.


As for the heat of 168s. Dunno.  The heat will be directly proportional to
the current draw so, if 168s pull a significant more amount of current, the
heat will be significantly more.

Try this...  Take a 158, impede airflow around it (a towel, in a small box
or etcetera), put 12V across it and measure the temperature.  Do the same
with a 168 and see how much hotter it is.----- Original Message ----- 
  From: Keith 
  To: mail@xxxxxxxxxxxx 
  Sent: Friday, December 29, 2006 1:22 PM
  Subject: 65 Marlin Instrument Bulbs


  I was wondering why my instrument panel bulbs for the backlighting seemed to be a little dim (typical of old 60's car...I think). I have a mixture of 158 (stock) and 194 bulbs which appear to be comparable per the information on this web page:

  http://www.theherd.com/articles/bulbs.html

  I am thinking about going to either LED replacements or the 168 bulbs, A little worried the 168 bulbs may bet a little too hot. Anyone had experience in this area?

  Keith
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