I've just ripped out all the dash wiring for my ICE. I have an amp under my seat which has an 4awg feed from the battery, fed into a fused distrobox. I want to use the spare output from the distro box to power my head unit and EQ. I know how to do all the wiring, however I also know that when you turn a relay off you get an amount of back EMF from it. I have a background in electronics and so know how dangerous that can be for small circuits. Is this gernally regarded as a problem in auto electronics, or can i assume that other things fed from the ignition live wire (like my alarm) will be able to cope with any back EMF?
relays and back emf
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relays and back emf
You can always fit an external flywheel diode to the relay. Fit around the coil wiring, with the cathode to the + side and the anode to the - terminal.
aye, it means a trip to maplin though. its a few miles away. was trying to see if i could get away without it!
