Fuse 8 - .86A draw Reply #15 – June 11, 2009, 11:01:02 PM I can't wait for my wiring to start going to . One day I will rebuild the whole thing. Hopefully by then I will have a garage. Quote Selected
Fuse 8 - .86A draw Reply #16 – June 12, 2009, 12:01:57 AM Try reversing the meter leads and see if you still have 1.2 ohms.Ohm meters apply a voltage to the circuit. There are diodes in the car between + and ground. If the meter voltage is high enough it can forward bias the diodes and measure a low resistance. Quote Selected
Fuse 8 - .86A draw Reply #17 – June 12, 2009, 01:51:43 AM So, apparently this is 99% my own stupidity. I have a dead map light/not turning on but the switch was on. After flipping the switch up to the off position, the current draw is now 15 milliamps. I understand why I didn't notice it due to the lack of a glow but , I didn't think of checking those switches. I guess this is good but a HUGE waste of my time. I still don't know how it got hit as I didn't do anything on that side of the car or rear seat - just get in, drive 2 miles up the interstate, get out, get in, drive back, get out.Still seems like a weird coincidence that my alternator isn't charging at the same time.CHECK THE SIMPLE THINGS! Quote Selected
Fuse 8 - .86A draw Reply #18 – June 12, 2009, 01:56:18 AM Quote from: TurboCoupe50;277145Not so, cold filament resistance in any bulb is FAR LESS than when it's lit... Most bulbs are only a few ohms cold...well,, hey,, think about it though tomhe may have some strange new fangle headlamp bulbs other than stock.A filiment bulb is pretty much a continuity check as in no way near 1k unless the bulb is some fancy blind you at night deal. Ive never read what the halogen bulbs read,, figured if they arent lit and dont work in a known good socket, toss em in the garbage.I think what might be a decent idea for you is to modify an evtm page with the wriing diagram you desire to focus on and then white out the circuits you have removed and insert what you have added. this will give the ole memory a chance to forget about it cause you have it dospoogeented.I had to do this with the bronco trailer wiring,,, i confussed myself one day trying to figure out what i did 8 years ago by using the hitch as the only light ground. Quote Selected
Fuse 8 - .86A draw Reply #19 – June 12, 2009, 02:26:18 AM Quote from: jcassity;277216I think what might be a decent idea for you is to modify an evtm page with the wriing diagram you desire to focus on and then white out the circuits you have removed and insert what you have added. I thought about this but it seemed too complicated :p I'll likely be adding a 4 gauge wire to the stock fuse block location and adding a second fuse block in the vicinity just to have a more stock-ish setup. I cannot find a large fuse block though - I want each part to have its own fuse. I see where Haystack is coming from.I may have not been thinking 12v clearly with my "1000 ohm" bulb when cold statement but the fact still stands that it is much more than 1.2 ohms when cold, unless it is a 120w bulb on the 12v system. I assume this is lit though? I don't claim to be an electrical genius.Voltage^2 / Resistance = WattsVoltage^2 / Watts = Resistance Quote Selected
Fuse 8 - .86A draw Reply #20 – June 12, 2009, 10:11:47 AM Measure the resistance of a few bulbs, you'll get the idea... Resistance increases probably 6-8x when they are hot, only then does Ohm's Law apply... So assuming your .86A current draw was a lamp, if it were lighting, current may have actually been 150ma(.15A)... Even the resistance of a electric motor will decrease dramatically running vs locked... Current draw of coils & solenoids can usually be determined by their resistance readings... And solid state electronics??? Forget measuring resistance, same applies to anything that's powered by a transformer(AC circuits), secondary load is the determining factor here... Quote Selected
Fuse 8 - .86A draw Reply #21 – June 12, 2009, 03:35:06 PM OK I have here on my desk a GE 1157 bulb. Standard tail/brake light.One filament is 2.2 ohms and the other is 0.5 ohms. Quote Selected
Fuse 8 - .86A draw Reply #22 – June 12, 2009, 04:16:24 PM Wait - same bulb? Anyways, they should be a whopping 6 ohms when lit? Rated at 27w/12.8v. Quote Selected
Fuse 8 - .86A draw Reply #23 – June 12, 2009, 06:05:26 PM Quote from: softtouch;277311OK I have here on my desk a GE 1157 bulb. Standard tail/brake light.One filament is 2.2 ohms and the other is 0.5 ohms.The 2.2 ohms will be the general illumination filament, while the 1/2 ohm will be the stop/signal filament... Quote Selected
Fuse 8 - .86A draw Reply #24 – June 12, 2009, 08:18:32 PM Quote from: TurboCoupe50;277353The 2.2 ohms will be the general illumination filament, while the 1/2 ohm will be the stop/signal filament...Oh, duh :p Quote Selected
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