getting to the wires for the coolant system/rad fan

looking if someone can get me a link or post a diagram of the wiring for the coolant system. like fan relay/ect/fan motor. also i’m looking at redoing and testing my wiring because my rad fan doesn’t work. i already made a thread on the other forum about this but now i’m thinking about taking stuff apart to see the whole picture.

i need to get to the relays and wiring by the radiator so i’m thinking of taking off the bumper and pulling off the headlight. also when the previous owner did the swap, (91 GS with b20b), he just had the ect switch wires (yel/grn blk) twisted together. i need to hook that up to the thermostat housing where the ect is now and am wondering if it’s easier to get to the wires from the top of the car or underneath since the wires are short. i was thinking of unplugging all the surrounding plugs and try to get enough play in the harness to connect longer wire to the thermostat housing. it’s hard to get to underneath.