Originally Posted by 2resa
In the middle of installing Kleinn horn and don't understand the part of directions that state I am to connect pin 3 to pin 1 and at the same time I am to ground pin 1. How do I get it two connections onto one male end. If I use a jumper wouldn't I be grounding pin 3 and pin 1?
Pin 3 is not a neccessarily a ground or positive. It depends on pin 1 once it is spliced into it. If you splice into the pin 1 wire with the pin 3 wire, then pin 3 becomes charged as pin 1 is charged. It seems to depend on the setup of your horn. Where electricity is concerned, I would find out which type of the "two horn types" that you have, and contact the manufacturer to find out which way to connect pin 1. It could mess up circuitry and burn things up, making a ground, positively charged, without knowing the proper setup for your particular vehicle.
It seems to be saying that if your horn is a negative horn system then pin 1 is positively charged (+) 12 volts. If your horn system is positively charged, then pin1 is negative, and grounded. Like the instructions say, I would determine the charge of your horn wire. Splice into it, with a electrical tester, and ground the tester. Probe the wire. If it lights up, it is a positive horn wire. Then, according to the schematic, you would should ground pin1 and pin3 will be grounded since it is spliced into it. If your probe doesn't light up, then check it as defined in the instructions for negative resistance, and pin 1 is connected for positive charge.
But, I would first confirm your findings with the manufacturer to avoid electrical disasters.
The negative connector on the compressor is ground.