Thread: need some help!!! best way to route the battery cables from trunk ????????

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A steel frame isn't the best conductor of electricity, although it will work. I ran my cables through the floor (grommet w/ silicone sealer) and along the frame under the car. They're held in place with rubber-insulated clips every couple of feet.

The positive goes directly to the starter.

I ran my ground to a stud on the frame, then from the frame stud to the engine block. I also installed a ground jumper from a transmission bolt to the frame, and from the engine block to the frame. Redundant, maybe, but a good ground is an absolute necessity.

S/O cable is very flexible,maybe more than welding lead.

I've always used Ancor marine grade cable primarily because I worked in the industry, and also because it is super high quality. Every strand is tinned individually making it very corrosion resistant. I also use their terminal ends for the same reason, and use shrink tubing over the cut ends to seal them further.

Don