Originally Posted by
Miniliteman A relay is used when the current for the contacts in a normal switch are too high and/or switching a load off gives a high voltage spike which could damage the contacts inside a switch.
For anything not exceeding 6-8 Amps I don't use a relay; that includes Facet pumps, ignition, blower motor, small lights, Terratrip, lambda-heater-element, dash etc.
Use a proper tool to crimp fastons and similar connectors. Do not solder terminals unless the max current is less than 100 mAmps (sensors).
If someone suggests that you should use quick-release battery terminals send him away, fire him, disown him, etc as these are major source of electrical troubles.
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