Most remote start systems have the ability to be installed on a diesel vehicle. Check the installationmanual included with the remote start system. Some systems can simply be programmed to becompatible with a diesel vehicle. Other systems have a (-) WAIT-TO-START INPUT wire that must beconnected to be compatible with a diesel vehicle.

• For systems with a (-) WAIT-TO-START INPUT wire it is necessary to interface with the wire thatturns on the WAIT-TO-START light in the dashboard. This wire illuminates the bulb until the vehicle'sglow plugs are properly heated. When the light goes out the vehicle can be started.

• This wire is always available at the connector leading to the bulb in the dashboard.

• Connect this wire from the remote start system to the wire in the vehicle that sends the signal to turnon the WAIT-TO-START bulb in the dashboard.

To find the (-) WAIT-TO-START wire

1. Set the multi-meter to DC voltage.

2. Attach the (+) probe to 12V Constant

3. Probe the wire you suspect leads to the bulb with the (-) probe of the meter

4. Turn the ignition to the ON position

5. If the meter reads 12V until the light goes out and then reads 0V that is the correct wire.

To find the (+) WAIT-TO-START wire

1. Set the multi-meter to DC voltage.

2. Attach the (+) probe to 12V Constant

3. Probe the wire you suspect leads to the bulb with the (-) probe of the meter

4. Turn the ignition to the ON position

5. If the meter reads 0V until the light goes out and then reads 12V that is the correct wire

On most 2002-Up diesel vehicles (Ford, General Motors, Dodge trucks), the vehicle’s WAITTO-START wire should not be directly interfaced with. Use a pulse timer relay to delay theremote start’s activation so the vehicle’s glow plugs can be properly heated. Directed Electronicsmakes a pulse timer relay that is readily available at many car audio and security specialty shops.Part number is 528T.