Difficult to understand, but that's how it works. Red and black are positive and negative only for light. Green is positive for switching and blue is on one side of the horn. The other side of the horn wire (-) to any negative. Red and green for battery positive, blue for sound signal. Black to minus from the battery and minus from the sound signal. Yellow does nothing.
HOTSYSTEM 5 Blue + 5 Red + 5 Green Dot LED Light Round Rocker Toggle Switch SPST On-Off Control For Car Truck
24 Review
Gaming headset ASUS TUF Gaming H3 (90YH02AR-B1UA00) black-red
46 Review
Illuminate Your Ride With HOTSYSTEM'S Blue LED Toggle Switch - Perfect For Car, Motorcycle, Boat, And More!
37 Review
Portable bluetooth speaker BT Speaker ZQS-8210 high power universal
35 Review
Tires pirelli formula energy 225/50r17 98y xl
14 Review
ARANA C16-08568 20" Gas Lift Struts - Perfect For Trucks, RVs, And Boats - 20 Lbs Capacity - 2Pcs Set
15 Review
MICHELIN Energy XM2+ 185/65 R15 88H summer
29 Review
2 Vepagoo 10In 13Lb/58N Gas Shock Spring Strut Lift Support For Cabinet Door Truck Tool Toy Box Lid - C16-03213
13 Review