Wire and connections will drop voltage but in the real world, unless your volt meter can read microvolts, I doubt you will see a difference. !8ga wire has a tad over 6 ohms of resistance in 1000ft.
I agree with Dennis. You can connect your Volt meter to the accessory terminal on the fuse box and achieve an accurate-enough reading. No need to connect straight to the battery...
well; some electronics company , i.e. Newark Electronics offer some digital volt meters that can be fixed to the instrument panel and wired to the battery or another place in order to have a voltage reading when you wish, I have found in the Digi Key Catalog the part number CDPM505-ND it is a volt meter that can read up to 20 VDC and uses a power source of 9 VDC and can be mounted in the car dash with minimal problems if I can help you in something please email me to ofsalcido@gmail.com
LOL.. not really too good though either. Especially since I was literally forced to read an old regurgitated thread without any cool pic's to make it worth my while. Yeah.. I know.. late night boredom does that to you sometimes.
here's Collins new Dakota Digitals, same as mine but in blue... http://mmb.maverick.to/attachment.php?attachmentid=58715&stc=1&thumb=1&d=1357432483 ......
For those of you that would like to use an amp meter with out the risk of fire there are gauges that use a shunt instead of sending the high amperage into the passenger compartment directly through the meter.
