Dazed and Confused
Join Date: May 2012
Location: Upstate New York
Re: nightmare of a problem, need help
Sorry for the delay. Essentially, a relay is an electromechanically controlled switch. If you know which pin feeds the power and which has the load, you can jump across them to complete the circuit. This eliminates bad relays. A relay may make, but do to carbon build up, corroded terminals, etc., you may not be passing full voltage. Also, if the coil or the commanding signal is weak, you may get a chattering relay. It also helps to know if the relay is breaking on neutral or on hot. Typically, an isolation relay will break on the neutral side which means 12V is constantly fed to it. The coil of the relay is a generally low load and by a triac or micro relay on a circuit board breaking the neutral, the arc that is typically generated when breaking on hot doesn't occur. When the relay is controlling a heavier load, it is broken on the hot side, that way you're limiting the exposure of a power source with a higher amperage protection.
Ever notice that there's so many high performance parts available for GM products?
Did you ever think that maybe they NEED them?