Standard relays included with RIGID wire harnesses are 12V. If your project has a 24V electrical system, you will need to replace the 12V relay with a 24V relay for proper functionality.Additional Attributes:GTIN:00815711018516Add-On:1063, 1067, 1031, 30130, 30140, 30150ASIN:NoProduct Family:AccessoriesProduct Weight:1Prop 65 Yes/No:Notest series:Universal FitWhats In The Package:1 RelayExtended Information:Emissions :4Life Cycle Status:Available To OrderPackaging:Quantity of Each:1Package UOM:EADimension:1.5 x 4 x 7 inchesWeight:1 PG