Quote:
Originally Posted by rxspeed7
What all are you trying to gain by doing this? Just to make a new harness to cure shotty 20yr old wiring or to eliminate unnecessary wiring and fuse's?
Zack.
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Exactly, I just want simplicity in the interior harness, and consistency in the engine bay harness.
Quote:
Originally Posted by rxspeed7
I didn't quite understand what you meant by including the pda into your harness. I know that on the rtek there is a seperate db9 cable that comes off the side of the ecu for a serial cable to a pda connects.
If your just wanting to clean up your harness i would strongly suggest just sticking with a oem mazda harness and ,maybe depinning the wires you don't need nor use, but as you said you are still running emissions. So pretty much there isn't going to be many unused wiring. As far as reducing resistance, as long as there is any ghetto hack job wiring done, you should be alright. Just be sure theres no crusty green or blue corroision on any of the wiring also.
Zack.
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Depending on which PDA I choose, I could use the 12v power wire from the cigar lighter and adapt the PDA charger into it; yes, the PDA is connected to the ECU, but the PDA will need to be charging while connected. So, it will need a power source.
I will be re-making the OEM harness(fully copying the original), but the "problem circuits" will have there(their?) own grounds instead of connecting it to a ground ring terminal. Also, I will try to incorporate a circuit breaker on the battery power wire and, 2 cut off switches. One switch to shut off power to the alternator; the other will stop power to the fuel pump.