Ignition relay or switch problem?

Went to start up my scamp today after it's been sitting for a few months, no dice. Cranks strong, but the car won't stay running. Checked with a test light, no power to the coil in the run position of the key, only in start.

Where is the ignition relay or where is ignition power switched on these cars? There is what looks like a starter relay next to the battery tray at the front drivers side under the hood but nothing else obvious.

Also, the headlights and turn signals don't work but all other lights and indicators do - very strange there.

Can anyone point me in the right direction?