Anyone know what wires go to which pins on a standard relay

 

I have -

 

Pin 85

Pin 86

Pin 87

Pin 30

 

one is Earth, one is supply 12V, one is switch, and one is supply to device.

Here is the info for bothe 4 and 5 pin relays

 

 

4 pin relay

 

86 Coil connection

85 Coil connection

87 Load ( eg. accessory,lights,horn etc )

30 supply ( can be +12 v or earth circuit switch depandant)

 

5 pin relay ( change over relay )

 

86 Coil connection

85 Coil connection

87 Normally open

87A Normally closed

30 Supply ( can be +12 v or earth circuit switch depandant

 

Hope that helps

 

 

Jeff TT

Cheers Jeff, Im wiring up a relay for airhorns so I need a +ve supply of 12v.

the horn works but blows the 10A fuse if used for longer than 2 secs.

 

so its -

 

30 - +12ve from Battery

87 - to +12v horn.

86 - from fusebox +12v (switched) that supplies horn at minute.

85 - Earth.

http://www.computingunplugged.com/issuesprint/issue200507/00001447.html

 

just found that now too - cheers