n brown
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i only use a couple of functions on my meter,don't be overwhelmed! continuity testing is for checking bulbs and fuses are ok and the volt meter tells you what voltage is coming out of the battery or alternator.you'll probably never use the other functions so you don't need to know how to,but those i mentioned are soooo handy.ie a bulb isn't lighting[bear with me i've got nothing better to do !]with a meter you can check the bulb,if its ok you can see if power is getting to the bulb holder,if not you can find a break in the wire with the continuity thing.vital imo,i've seen them for a fiver