From: Sky2high@aol.com
 
 Dan,
 
 I will find the page in the 235 converted to the original 320/360  build
 manual and maybe the page in the POH (if I remember  correctly) that
describes
 this circuit and put them out on LML.
 
 The relays supplied by Lancair are similar to old Ford starter relays meant
 for high current (inductive) loads but intermittent use as opposed to the
 master relay - they have contactor terminals, S+, I and the body which must
be
 grounded because S+ is the positive voltage switched to one side of the coil
 and  the other side is grounded thru the case.  Remember that master relays
 generally have one side of the coil internally wired to the "BAT" marked
 contactor terminal connected to the anode and are activated by  switching the
other
 side of the coil to ground by the master power switch.
 
 
 The Legacy wiring is the same in this regard.
 
 
 Additionally, consider this:  The "I" (indicate) terminals on  these relays
 are to be joined and routed to the "pump running" indicator  light.  Many
 people use 18-20 AWG wire for this purpose BUT the tap is  from the contactor
that
 carries the motor power - usually thru 8  AWG wire and a 50 Amp breaker.  If
 that indicator wire is ever  shorted, it may burn before it ever triggers the
 50 A breaker.  In my  airplane, diodes separate the two relays (no backfeed
to
 the motor alllowed  thru a stuck relay) and an in-line 5 Amp fuse protects
the
 indicator  wire.  At least the last Legacy circuit I saw uses low current
 diodes  to separate the relays and, hopefully, they would blow before the
 indicator  wire burned.
 
 You can only imagine the havoc caused by the overheating and malfunction of
 one of the gear pump relays.  Some of you may remember my story of Arnie and
 I flying our Lancairs to Reno in September, 2001 - a story  entitled "The
Flight of Two Madmen".  He had such a relay failure on  takeoff from Ogden, UT
on
 our way home after 911.  On a Sunday yet, but a  local Napa Parts store had a
 replacement relay.  Note that he used to have  his relay circuit going thru a
 "MISC" breaker - not now.
 
 Scott Krueger  AKA Grayhawk
 Lancair N92EX IO320 SB 89/96
 Aurora, IL  (KARR)