cvic

i recently purchased a used '91 lx with auto SOHC 1.5 (d15b2 i think). previous owner did some work on it and i'd like to compare it to a detailed WORKING oem engine bay picture to see what's different and hopefully fix some problems. specifically i'd like to know how the wires are hooked up and more importantly which wire from the engine wire harness is connected to the AT solenoid valve and how it's connected. There are couple of bolts in the engine bay that are missing as well and i'm wondering which ones are necessary and which are not. I've looked through Haynes manual and they don't even talk about the solenoid valve nor have any pictures of that region in the book. thanks.