This kit is for 12V applications only and comes with the FR-PT jumper harness. This jumper harness has the AMP/Tyco interface connector 180907 on it. This mates with the 180908 connector, which is on many SPAL fans.
This is a 40 amp relay kit. It does not contain a 3/8 npt thread thermoswitch or on/off switch to turn fans on. Use in conjunction with PN# 185FH or PN# 195FH when using dual fans or when using A/C without a trinary switch You should have (or will need) a temperature sensor.