After several hours of diagnosis of my 94 NAS D90 not starting I narrowed it to the fuel pump relay.
There are two silver relays under the passenger dash, (photo 1). I replaced the right hand one with a "used" 5 pin relay and it made no difference. I put the old left hand one on the right and the "used" one on the left" and it started perfectly (photo 2). Two questions: 1) what does the left relay do and 2) what does the right relay do. Just to be safe I will replace both, but just curious what I did and why did it work.
Also what is the relay on the far left and the green plug un the right?