need better instructions on installing start relay. Have the egy90 compressor
If you bought the device AP3885081, it comes with complete info.
You should use one of the large plug in boxes for your compressor based on the serial # of the fridg.
Make sure you take a picture of the old start device wiring, or make a diagram where which wires went where.
If the old start device was a discrete, small black plastic item, then use the matching,discrete item supplied.