From: marv@lancair.net
Subject: Re: [LML] Firewall pass through for Lightspeed Ign sensor wire
To: lml
Date: Wed, 14 Nov 2007 21:37:45 -0500
Message-ID: <web-2472759@logan.com>
In-Reply-To: <001801c826db$e7b56fe0$6601a8c0@paulrzm5oth3zt>
References: <list-2470602@logan.com>
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Posted for "Paul Bricker" <pbricker@earthlink.net>:

  Jay,
  
  
First, let me emcourage you to keep the harness intact and run the cable
  thru a hole in the firewall. My original installation in my ES I cut the
  harness and routed it thru a bulkhead connector. I had an intermittant
  conatct that caused several problems until I tracked it down. I ordered
  another harness from Klaus and started over.
  
  
  You are right that you need a large hole to pass the connectors thru the
  firewall. I used four alum plates (.050?), each about 3 inches square, with
  a ľ inch hole in the center, and four bolt hoes in the corners. I cut a 3/8
  inch slot from one side to the center hole in each. Two plates went on each
  side of the firewall, with the slots on adjacent plates offset 180 deg.
  Rubber grommets protected the cable where it went through the plates, and
  the cavity between the plates was filled with high temp silicon caulking.
Four through bolts/etc finished the deal. The only fire path is along the
  cable itself. Whether this provides a robust and finished appearance is
  beyond me.
  
  
  I’d take a photo but the plane is in the paint shop. Perhaps I’ll be able to
  find a picture in the building files if there is interest.