So last night i clipped off the engine harness ground's connector, and ghetto rigged the 3 ground wires up to an 8ga wire, which directly connects to the negative terminal.

Im assuming the thermostat grounding point is not efficient since electricity flows better through copper (the wire to the negative terminal) than aluminum (thermostat housing). But the question is, which part of the harness do those 3 ground wires comes from? I want to "unloom" some of the harness, so I can have the origional ground wires directly contacting the body ground, and the only way I can do that without extending them, is to unloom the harness somehow, but im affraid the wires will be from different sides of the harness=aka too short to reach the chassis.

I do not have a soldier right now, and I have 3 different cables spliced together, which is pretty ghetto, and im afraid of the connections failing. I KNOW you engine bay shavers/tuckers have done this.

 

well how bout this, is there a coupler, that will connect a 4-8ga wire, to a 16ga wire? How would you connect a 4ga wire to a 16-18ga wire?

 

youre talking about the ground that has 2 blakc and 2 brown/black wires on it right? they take the most direct route to the ecu just follw them back to the ecu clip and you can go from there.

 

nice, couldnt I just remove the pins, and directly have them come straight from the ECU to the nearest ground? Im sure a 4 inch ground wire has less resistance than a 40inch.

 

no unfortunately. on the harness is a stubbed brown connector with alot of brown/black wires connected to it. 2 of those wires will directly ground. If you wanted you could take the 2 black wires from the ecu clip (usually A) and ground those directly, then find the 2 grounds from that brown connector and ground those directly. you really wont see any beneft tho from changing these gound points directly to the battery.

 

^^right, but wont it be a more efficient setup, if they were grounded directly to the chassis vs the thermostat housing?? Im just assuming here

 

well its more electrically sound to run all ground points back to the battery individually but is untimately unnecessary. If you already have the wires cut and you dont mind taking time to unspool and then respool everything then yeah, give it a go. It certainly wont hurt anything. it might be easier in the end tho to just fix the wires, then build a thicker copper wire and run it from the thermostat housing to the - battery terminal .