multimeter and some duct tape? cigarette lighter socket? http://www.amazon.com/Shells®-Motorcycle-Cigarette-Electric-Charging/dp/B00FJ3TS42/ref=sr_1_4?ie=UTF8&qid=1391100218&sr=8-4&keywords=cigarette+voltage+meter
Agree!! I've seen battery voltage go low as 12.3 at idle or driving for no reason. Has been like this since brand new, has to do with the ELD.with the stock setup, the voltage reading at the 12v outlet(12.1) on my element was very low compared to the reading at the battery posts(12.5). has anyone else noticed this large of a voltage drop at the cig plugs on their honda element ?
i decided to rewire all stock 12v outlets to my aux battery and now i have zero voltage drop. i also wired in 2 drok 5 digit voltmeters i bought from amazon, one for each battery. it is interesting to see the voltage output fluctuations of these modern alternators. so much more different from the old school alternator output set points i am used to.
A .5 volt drop is not a lot considering all the connections/relays/wire to the power ports. If it really bugs ya run new wire direct to the port. Really a mute point because the ports are only rated for 10a.i have read a bunch on the subject already and I can see the benefit of the modern output design. it's kind of neat.
what i don't like is the voltage drop at the cig plugs compared to the battery posts when the car is not running. with all the modern technological improvements on modern vehicles, something as simple as voltage drop through wire harnesses, are still very present. it's not even a little voltage drop either....0.5-0.6 volts is a huge drop. i'm curious if maybe it is something with my vehicle only because i haven't read of anyone here noticing something similar.
I've done voltage drops on many circuits, just never a power port. If your running a fridge on a power port, I would recommend changing over to an Anderson type connector and running a new fused circuit with 12 or 10 ga wire depending on how much current the fridge draws. Those power ports & small ga wire are not designed to carry a constant 10 amps. You risk overheating and possible fire.yeah, 0.5 doesn't sound like much but when your voltage cutoff is at 11.2 for your 12volt compressor fridge, 0.5 is huge. it's the difference between safe food to eat and food poisoning. you are right though, so many connections and relays. a simple use of larger awg wire will remove voltage drop if honda wanted. it does bug me that's why i just rewired it to my aux battery, .25% voltage drop now. that's pretty much zero. i cannot have any energy lost to voltage drop. anyway, i agree about it not being important for most users because they only use it to charge a phone or something. have you ever measured the difference at the cig plug vs battery posts on your element?