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Check for reliable grounding
The negative battery terminal is connected to the (weight) of the car - to metal engine / gearbox and the car body - and most electrical systems are designed so that the element of electrical fit only one power cord, and current returns through the metal body of the car.
This means that the electrical mounting element and the vehicle body are part of the electrical circuit.
Therefore, bad or oxidised fastening can cause a large number of problems in the electrical system of the total output of the circuit to an unreliable system of its work.
In particular, bulbs can burn dimly (especially if you include another circuit that uses the same ground), motors (eg wiper motors or fan cooled heat sink) can work slowly and the inclusion of any chain can influence the work of other chain.
Note that on many cars connecting earthing strips between the different units of the automobile, for example, between the engine / transmission and body, usually when between elements there is no metal contact due to the use of rubber mountings, etc. | PERFORMANCE ORDER | | 1. Disconnect the battery and connect one lead of an ohmmeter to the (weight) of the car. | | 2. Connect the other test lead to a wire or ground point to be tested. Resistance recorded by an ohmmeter should be equal to zero; if not, check the connection as follows. | | 3. If you think the connection is not in order, disassemble connection and smooth out to pure metal contact surface and the surface of the terminal wires or grounding element. | | 4. Remove dirt completely corroded, then using a knife to remove the layer of paint in order to obtain reliable metal-to-metal connection. | | 5. When assembling, securely fasten connection; When installing the terminal wires, use toothed washers between the plug and the body. | | 6. After connecting, to prevent corrosion, apply a connection layer of vaseline or silicone grease or treat it with sealant, such as (Holts Damp Start) or waterproof grease such as (Holts Wet Start). |
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