When I had my old 97 bought new I could just turn the key without waiting for the light and it would fire right up in 50-60 degree weather. So I tried that when I was checking out my new used ride. No go, the owner states wait for the light it is cold blooded. Now as soon as I get home the next day 40 degrees outside wait for light click crank then it stops batteries low. Charge batteries, five maybe six cycles still no go. Plug truck in for about an hour final fires up. Checked solenoid appears to work. Guess I have to read up on how to check glow plugs with ohm meter. Maybe just order harness gaskets and plugs and just roll with it.