Coach Controls Wiring Harness?

74SwingerSpe said

I was surprised about one thing, though. All of the relays in the fuse/relay box are all soldered in. That means if one goes bad, that circuit is dead. So, forgive me if this is a dumb question, but what would be the average lifespan of a relay? Should I be less worried than I am?

Click to expand...

The life of relays varies. The mechanical life of opening and closing without load could be a million. At rated load current, resistive load, perhaps 100,000, but, resistive load, is not typical. With an inductive loads, or incandescent lamp loads, life will be much less. If inductive loads such as motors, A/C clutch, without snubbing or diode suppression life may be very short... To answer the question better, the relay part number, and load information is required. DC switching with inductive loads off is harder than most think, there may be kick-back voltages that exceed relay voltage rating, without snubbing. Incandescent loads have high inrush current, when switched on, at many times typical load current.