4kq no start-weird electrical problem

[Tu2Tweng at aol.com]

hi new to list....

symptoms.....car dies at cruising speed

turn key - cranks -nostart
then - crank- starts...try to engage 1st. car dies
then turn key - no crank-no dash lights - trip on -trip blanks out in
IS/start position
trip returns returns when in IS off/on position- but still no lights , TS,
Horn, flasher , etc.
then do side of road batt lead check- make sure all is tight
still dead....tow car home

next day( today)

trip on , 12v to IS red lead, 12v to cig lighter---no12v to anything else
including parking lights....trip blanks in IS start position

then check fuses -all good
then switch out IS with known good---still unchanged
switch out batt neg with new
switch out motor to ground with new
replace starter soleniod terminal wire ends with new

now heres the status ....12v at batt......no power any where else including
trip

none to IS red lead
none to cig lighter
all fuses good and wire connections tight and free of corrosion

only thing I havent checked is bottom fuse box connections and relay equipment


any suggestions before I tow this to a shop

thanks brian
85 4kq
210k mi