'95 mirage radio replacement, help interior lights don't work

Also posted in the mirage section of this forum, hope it is ok to post both places?

The radio quit working in my '95. I want to replace it with a cheapie for now. I bought a used radio off of ebay from a mitsubishi but it did not have all the connections the old radio has.

There seems to be a connection to the interior lights through the radio. There is a fuse and connector that don't match any normal radio stuff.

When disconnected the interior lights do not come on with the headlights.

I have rigged a fix but now the interior lights are on whenever the car is started. Not a big deal but it bugs me.

I put in a cheap radio for now.

Anyone know about this? Am I crazy or just missing some info?

Thanks