Horn Not Working

[CTScott]

Originally Posted by ACKING_QC

so SH!T HAPPENNED I was working on replacing horn on my LE... for hornS from my 1992 Celica GT-S wires are the same so it should work... made a mount to bolt the 2 celica horns on the OEM Yaris LE horn mount bolted them... CUT wires and extended them because otherwise, they would not fit... so we cut the OEM yaris wire (the wire that goes to the steering wheel and made some connections with some wire joints...) the wires are CORRECTLY done.... pressed horn.. didnt work... sand paper the mount guessing a bad ground.. still didnt worked.... we decided to put the OEM horn in place STILL doesnt work...the fuses all seems okay after a rapid check... so wtf is happenning ?

Measure the voltage between the horn wire and ground. If you don't have 12 V there with the horn switch pressed, then the wire between the horn relay and the horn may be damaged.