Ive got a 96 LS, but this should be the same for all dc2/4's

Does anyone have a circuit diagram for the starter circuit? What switches/resistors are in the circuit?

This pretty much goes with my other thread but I know that something in my starter circuit isnt connecting whenever my car has been sitting in the sun. The car can be started by bypassing the circuit and directly connecting it to the battery.

Thanks guys this has been stumping me over and over for 2 months; everytime I think I found the problem I end up being wrong so thanks for the help!