green
does a water heater require a ground wire?
The black wires are the heater wires, the white wire is the signal wire and the green is the ground wire.
Take the cover off the engine. The block heater wire is tucked away there in plain sight. You will know it by the 120v plug. It may have a cover over it. If you are looking for the actual block heater , follow the wire.
If you cann't see the wire then you probably don't have a block heater or the electric cord was removed. Check on the block to see if you find the heater itself. If you don't find it then you don't have a block heater!
the hot wire goes to the starter and the ground wire bolts to the engine block.
In Bangladesh the color of live is green and neutral is blue and ground is black.
The battery ground wire runs from the battery to the engine block.
The chasis is the ground. There is no wire.
Any ground wire has to be connected to an independent ground wire that returns directly to the distribution panel and not to the neutral of the circuit.
The ground wire at the bulbs is black.
You have a short in the wire to the heater or the heater is no good, easy way to check with a ohm meter is to pull wire off heater (at the heater) and do a ohms check from the wire to ground (metal part of car). If it shows 0 or near 0 then you have a shorted wire if it shows open then its the heater that bad!
black