Ground Switch Relay

Connect the positive lead to the high beam positive wire and the relay ground to the chassis.

Ground switch relay.

Touch the 86 wire to the battery s positive post and the 85 wire to the battery s negative post. Convert a positive output to a negative output. To test the relay itself take two wires each about a foot long with a female spade terminal at one end and stripped at the other end. That means the positive terminal of the device is connected to the 12v supply.

Ask question asked 2 years 3 months ago. Attach one spade connector to relay terminal 86 coil. Weak negative output to strong ground output. Connect the ground wire from the relay to the high beam positive wire so the fog lights will turn off when the highs are on.

Connect the 12 volt positive lead to the positive wire on the parking lights. Often it is necessary to provide a stronger ground than the negative output of an alarm or keyless entry can provide. Active 1 year 2 months ago. Pin 30 is connected to the device that needs a ground connection.

When this is the case use the following diagram. If you have a switch or an alarm or keyless entry that has a positive output that you wish to use to switch a device that requires a ground such as a horn dome light parking lights head lights hatch release etc wire a relay as shown below to convert the positive output trigger to a negative output. How to wire automotive spdt relays. Attach the other to relay terminal 85 coil ground.

For driving or roof lights. Pin 85 is the positive signal from whatev. My need is to turn on and off ground using the positive as trigger. See all 8 photos it s wise to use a star washer to.

Viewed 7k times 1 begingroup i am having a 3 pin relay used in bike horns.