Next test:

Locate the 3 wire connector on the firewall that seperates the brake master area from the engine. This connector is just to the left [ looking from the front of car] of the master cylinder..unplug the connector ..now, take a jumper wire and go from the bat pos+ terminal to the center terminal of the connector on the firewall [ not the harness you just unplugged]..make sure car is in N or P.. this test should turn engine over ifstarter/solinoid/battery are all OK. Key does not have to be ON for this test ..This test simple by-passes the NNS /Ignition sw/K38 relay and verifies those starter parts.
If that is Ok , do this next test:
Take your test light and hook one lead to a good ground and the other to the center wire on the harness you just took off firewall plug..
put it on windshield where you can see it [ or have a helper in car]
Now, with left hand, hold key over to start position and hold it there while ,at the same time , move shifter selector back and forth thru the gears , P and N .. Does the lamp light at any time?