This connector will allow you to connect the 10ga red wire to the relay. Slide the connector over pin 87, and crimp the exposed red wire into the connector.
Pin 30 is the easiest connection to complete with this setup. Take the red lead from the compressor and connect it directly to pin 87 on your relay. This should be the last connection needed for the relay.
Repeat the steps above for the 2nd relay. You must run a lead of 10ga wire from the battery for EACH COMPRESSOR. One lead of 10ga cannot handle the power draw of both compressors at once. You may use a small section of wire to connect pin 86 on both relays together. Alternatively, run two leads from one side of the pressure switch to pin 86 on both relays.
Finishing up the Pressure Switch
Now that the relays are wired up, you are now left with one side of the pressure switch to complete.
We require this side of the pressure switch to be connected to a key-power-on source on the vehicle so that the compressor can only run when the vehicle is on. If you connect this wire to the battery, the compressor could run overnight and drain your battery.
Start by locating the supplied roll of blue or grey wire (doesn't matter which you use). Using the supplied red female quick disconnect, we can attach a lead of blue/grey wire to the prong on the pressure switch.
From there, you will need to locate a good power source for this wire. This will differ from vehicle to vehicle. You will want to locate an accessory power wire that is only powered when the vehicle is on. If you need help locating a good source we recommend checking google for wiring schematics for your vehicle.
Below is a list of common sources that typically only come on when the key comes on. Tapping into the power wire on any of these sources using the provided red T-tap in the wiring kit, will give you the positive key power on you need for the system to only run when the vehicle is on.
- Amplifier (if applicable)
- USB Power Outlet
- Cigarette Lighter
- Daytime Running Lights
- Trailer Lights
- Heated Seat(s)
- Power Windows