tractors4u Posted January 27, 2008 Report Share Posted January 27, 2008 I am in the process of installng my D3 in a 2007 Silverado Classic. This plastic piece is on the reverse sensor wire. What is it? I took the time to ohm every connection I made with my volt meter. I just set the meter to give me a tone if I had continuity. When I ohmed this wire I did not get a tone. The numbers on the meter changed, but no tone. I took the connector apart and I can see that the connection is good, but I am not getting a tone. I have seen pieces like this that were to prevent feedback. I was wondering if these was affecting the ohms. Thanks Quote Link to post Share on other sites
HiFiSi Posted January 27, 2008 Report Share Posted January 27, 2008 It could be a resistor, because the D3 doesn't need the full 12 volts from the reverse light wire to tell that it's on? Quote Link to post Share on other sites
cntrylvr79 Posted January 27, 2008 Report Share Posted January 27, 2008 it is a resistor, 1k if memory serves. Quote Link to post Share on other sites
tractors4u Posted January 27, 2008 Author Report Share Posted January 27, 2008 Thanks guys. So do you think that it s the resistor that is causing the different output on my meter when I try to check the connection. Hopefully I will get this thing finished today. Quote Link to post Share on other sites
xsdbs Posted January 27, 2008 Report Share Posted January 27, 2008 It could be a resistor, because the D3 doesn't need the full 12 volts from the reverse light wire to tell that it's on? doesn't the resistor limit current not voltage? Quote Link to post Share on other sites
HiFiSi Posted January 27, 2008 Report Share Posted January 27, 2008 Whatever. It's a resistor. What is it resisting? I don't know. It was a guess, hence the question mark at the end. Quote Link to post Share on other sites
jhoglesr Posted January 27, 2008 Report Share Posted January 27, 2008 It could be a resistor, because the D3 doesn't need the full 12 volts from the reverse light wire to tell that it's on? doesn't the resistor limit current not voltage? A resistor limits current and reduces voltage to the rest of the circuit. Quote Link to post Share on other sites
MisFit Posted January 27, 2008 Report Share Posted January 27, 2008 its a resistor, of course its going to affect the meter reading Quote Link to post Share on other sites
DJ Hellfire Posted January 27, 2008 Report Share Posted January 27, 2008 It could be a resistor, because the D3 doesn't need the full 12 volts from the reverse light wire to tell that it's on? doesn't the resistor limit current not voltage? Same shit. Quote Link to post Share on other sites
WwRGSwW Posted January 27, 2008 Report Share Posted January 27, 2008 It could be a resistor, because the D3 doesn't need the full 12 volts from the reverse light wire to tell that it's on? doesn't the resistor limit current not voltage? Same shit. Ummm no? VOLTAGE Voltage is the potential difference between two points. Think of it as the equivalent of water pressure. You get voltage across something, not through it. Voltage is measured in volts. Obvious. Voltage causes sparks and hair standing on end. CURRENT Current is the number of electrons flowing per unit time. Think of it as the equivalent of water flow rate. You get current through something, not across it. Current is measured in amps, short for ampères. Despite the above, it is not correct to refer to current as amperage. Current causes fire and death. Just like people think High Voltage will kill you... WRONG, High Current will kill you, they usually run side by side. I work in Show Production with high current three phase disconnects, the other day I was in an arena with 1600amps per leg... thats a lot of power for one show.. Anyways, why your DMM only showed a number is because its a resistor, and the BEEP is for "DIODES" for oneway flow, also used to test connectivity But you do use a resistor to lower voltage (or you can, because it resists the current which inturn lowers the voltage) just an FYI 330ohm will take 12v to aprox 30ohms - 3volts Quote Link to post Share on other sites
HiFiSi Posted January 28, 2008 Report Share Posted January 28, 2008 VOLTAGE IS A PRODUCT OF ELECTRICAL CURRENT. If you impede/resist the current, the voltage will be affected relatively. Quote Link to post Share on other sites
WwRGSwW Posted January 28, 2008 Report Share Posted January 28, 2008 VOLTAGE IS A PRODUCT OF ELECTRICAL CURRENT. If you impede/resist the current, the voltage will be affected relatively. hence what I said "But you do use a resistor to lower voltage (or you can, because it resists the current which inturn lowers the voltage) " Quote Link to post Share on other sites
DJ Hellfire Posted January 28, 2008 Report Share Posted January 28, 2008 VOLTAGE IS A PRODUCT OF ELECTRICAL CURRENT. If you impede/resist the current, the voltage will be affected relatively. hence what I said "But you do use a resistor to lower voltage (or you can, because it resists the current which inturn lowers the voltage) " I was't saying that voltage and current are the same thing. I was saying that if you resistance current, voltage drops and vice versa. I am ASE certified in Auto Electrical (as well as brakes and suspension), so I know the laws and equations. Quote Link to post Share on other sites
rickap7 Posted January 28, 2008 Report Share Posted January 28, 2008 It is a FUSE RESISTOR as per the installation manual(fusible link) Pioneer has been using them for ever instead of putting a real fuse in line. Its probable cheaper to use a resistor than a real fuse in line. Quote Link to post Share on other sites
WwRGSwW Posted January 28, 2008 Report Share Posted January 28, 2008 VOLTAGE IS A PRODUCT OF ELECTRICAL CURRENT. If you impede/resist the current, the voltage will be affected relatively. hence what I said "But you do use a resistor to lower voltage (or you can, because it resists the current which inturn lowers the voltage) " I was't saying that voltage and current are the same thing. I was saying that if you resistance current, voltage drops and vice versa. I am ASE certified in Auto Electrical (as well as brakes and suspension), so I know the laws and equations. Only one "Main" law... Ohms Law.. I fkn hate that circular chart. Quote Link to post Share on other sites
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