So, I'm attempting a wire tuck...
Jan 22, 2012, 10:37 AM
#158
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Also forgetting to mention you would have to remove the plastics for the windshield wiper motor as this is powered via this harness too. It would be easiest to also remove the intake manifold to remove the stock harness. I know with have the F1-i that I have I had to remove to get the stock harness out. Much easier to do this than to suffer trying to work around it.
Feb 23, 2012, 12:50 PM
#161
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Hey guys, I want to point something out. There could be benefits from having a rats nest. When wires are bundled together, they become electromagnetically coupled. Back in college, I was doing an electronics lab, and although me and my lab partner checked our work a bazillion times, the finished circuit just wouldn't work. Finally we gave up and decided to take it apart and return the parts to the bin. But first, we unbundled all the wires, and tried turning on the circuit again... and voila, it worked. It turned out that my lab partner was a neat freak and had bundled all the wires together for a cleaner look. We surmised that some of the clock signals must have gotten unwanted noise from being coupled to another wire, and unbundling the wires removed the coupling. The circuits we were working with were capable of going to several MHz, but frequency has nothing to do with the problem. bottom line is, if Mitsu designed the wire harnesses a certain way, I personally would not rearrange and rebundle them with something else. You might create an electrical gremlin that would be impossible to hunt down...
Feb 26, 2012, 07:53 PM
#162
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Hey guys, I want to point something out. There could be benefits from having a rats nest. When wires are bundled together, they become electromagnetically coupled. Back in college, I was doing an electronics lab, and although me and my lab partner checked our work a bazillion times, the finished circuit just wouldn't work. Finally we gave up and decided to take it apart and return the parts to the bin. But first, we unbundled all the wires, and tried turning on the circuit again... and voila, it worked. It turned out that my lab partner was a neat freak and had bundled all the wires together for a cleaner look. We surmised that some of the clock signals must have gotten unwanted noise from being coupled to another wire, and unbundling the wires removed the coupling. The circuits we were working with were capable of going to several MHz, but frequency has nothing to do with the problem. bottom line is, if Mitsu designed the wire harnesses a certain way, I personally would not rearrange and rebundle them with something else. You might create an electrical gremlin that would be impossible to hunt down...
No offense, but it sounds like you didn't properly shield or electrically isolate wires and it induced crosstalk. I deal with T1's at work all day that run 1.544 mHz, tightly bundled, and shielded properly and don't have that issue at all.
Did you ever toss an O'scope on there to verify your hypothesis?
Feb 26, 2012, 08:33 PM
#164
Evolving Member
The stock wires are bundled together as well, just criss-crossed horribly. The milspec setup has worked on hundreds of other cars out there, and I'd dare say nothing in our car is going to clock near the kHz.
No offense, but it sounds like you didn't properly shield or electrically isolate wires and it induced crosstalk. I deal with T1's at work all day that run 1.544 mHz, tightly bundled, and shielded properly and don't have that issue at all.
Did you ever toss an O'scope on there to verify your hypothesis?
No offense, but it sounds like you didn't properly shield or electrically isolate wires and it induced crosstalk. I deal with T1's at work all day that run 1.544 mHz, tightly bundled, and shielded properly and don't have that issue at all.
Did you ever toss an O'scope on there to verify your hypothesis?
Feb 26, 2012, 08:42 PM
#165
Evolving Member
ahhh I just thought of another thing. You said the stock wires were criss crossed horribly. I have not looked, but they may have been done that way on purpose, to prevent crosstalk. I my current work, which involves chip layout, sometimes we criss-cross adjacent signals on purpose to reduce cross talk when we dont have the luxury of shielding. This mainly works for complementary signals. There is a technique called bit-swizzling, which, if you added up all of the length of the negative version of a wire with the positive version, u find that it got equal amounts of exposure to the positive and negative version of the neighboring signal, and theoretically, any crosstalk induced by the neighbor would have been self-canceled. Could the horrible criss-crossing on the stock bundle be going after this effect?