another really useful function that you're going to use on these is to check resistance of a wire which is over here you can see this symbol right here looks like an upside down horseshoe that's that's the own symbol so that means resistance and that's a very basic check to check a wire so here here i have a wire on to zoom out well for one thing you can just check these two together resistance you want it to be closer to zero more like you know a very low reading zero point something is usually good and resistance goes into check and continuity and if you're on one end of the car and you're checking the wire let's say this wire well if it's a solid good wire to the other end which would be this one then the resistance is going to be you know zero or a few tenths okay and the problem that you'll have on cars is that you'll get corrosion you'll get back connections and those increase resistance but anyway just to start off basic I know this is a good wire section so if I if I start off with testing my two leads together let's see what these say cuz I'm not going to get any lower 20 closer to zero then then this right here on my meter so my meter has seen better days and I think I worked out then ringing a few too many times doing heating and air conditioning but for tents so 0.4 0.3 in my mind right now working on this car that's zero I'm not going to get any better than 0.4 ohms with this particular meter and I'm just making that point too just to show people start off knowing what your two leads are together as far as resistance goes fancier meters when you do this test you can zero it out you can do that and hit the 0 button and and then it'll it'll begin to read zero it doesn't matter so let's do a quick check of this wire right here so you just touch and you you go right here so this wire has a resistance of 0.4 ohms which again it is perfect because with no wire like I just showed you guys that's point for that's resistant so you can check resistance on a lot of things you do not check resistance on something that has live current going to it like this 9-volt battery or 12 volts if you know your system has power you do not use resistance on your meter it'll damage the meter or it will just say Oh L like it does now out of limits bottom line you don't check resistance with a live circuit so I'm not going to show you that