Help Quick Need to make code smaller

[mister_e]

Ralph,

If Programmednew can access the horn wire directly under the dash at the column stearing it will be easier. Most of them are negative and they drive an external relay to drive the horn. In this case, he will be able to remove the relay and keep only the transistor + diode.

OR skip the relay idea and use a MOSFET to drive in positive the horn is a common use in some car stuff.

Programmednew

If you can provide your car model and year, i can provide you the color of the horn wire at the stearing... if i know you car model.