Which wire is which?
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J188
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Which wire is which?
I'm currently trying to get my head around the wiring of my van, as when i bought it, it didnt have a leisure battery but had some wiring for one in. It also used to be a pop top, but the roof has been replaced with a tin top, and so there is no camping lights to speak of. Now here is the problem. The main van battery has the relay and some wiring for what i think must be the fridge and water pump etc, but a two core red and black cable and a green cable go from the relay through a rubber gromet in the battery compartment and then up the inside of the drivers door arch to blackness, does anyone know what these wires are for, as it does not seem to be the fridge or pump unless the VW guys have decided to wire the scenic route...
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J188
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I've still got to connect them up to see what happens 
The relay has a red free hanging lead with spade connector on and the rest of the relays wires disappear off to unknown areas, I imagine that the red wire goes to the positive of the battery and the relay must get the negative feed from the chassis ?
The relay has a red free hanging lead with spade connector on and the rest of the relays wires disappear off to unknown areas, I imagine that the red wire goes to the positive of the battery and the relay must get the negative feed from the chassis ?-
AngeloEvs
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Tough to explain......but here goes
Make a note/drawing of which leads go where on the relay.
Next identify the relay coil leads. The relay should have a symbol for the coil....looks like a rectangle with two lines and number or letter to state which terminals are the coil and these are stamped on the back of the relay. Might also have little circles to identify the switch part of the relay. If not.......
Disconnect all the leads.
One of the relay coil leads shoud connect to chassis, set meter to ohms and check/measure.
Set meter to volts and measure each one in turn. One will probably read 12V and this one probably connects to the starter battery (you don't have a leisure battery according to your post)
Now switch on the ignition and measure the remaining cables. See if you now have 12V on any of the remaining cables. If you do, chance is that this cable feeds the relay coil. Switch ignition off and re-check, voltage should dissappear.
If the relay coil feed is off the alternator, switch engine on and see which cable shows 12V.
If you can identify these cables then the remaining one will feed the fridge, possibly through a fuse or connects to the leisure battery to charge it.
See how you get on......phew!
Make a note/drawing of which leads go where on the relay.
Next identify the relay coil leads. The relay should have a symbol for the coil....looks like a rectangle with two lines and number or letter to state which terminals are the coil and these are stamped on the back of the relay. Might also have little circles to identify the switch part of the relay. If not.......
Disconnect all the leads.
One of the relay coil leads shoud connect to chassis, set meter to ohms and check/measure.
Set meter to volts and measure each one in turn. One will probably read 12V and this one probably connects to the starter battery (you don't have a leisure battery according to your post)
Now switch on the ignition and measure the remaining cables. See if you now have 12V on any of the remaining cables. If you do, chance is that this cable feeds the relay coil. Switch ignition off and re-check, voltage should dissappear.
If the relay coil feed is off the alternator, switch engine on and see which cable shows 12V.
If you can identify these cables then the remaining one will feed the fridge, possibly through a fuse or connects to the leisure battery to charge it.
See how you get on......phew!
