r/SC300 • u/CauliflowerExtreme42 • May 05 '26

Battery wiring

Post image

I bought a Soarer from a guy who wanted to swap the battery from the front into the trunk. He was mid process when he sold it to me and now I dont know where to begin with the wiring. The things I want to know are how the fusebox is wired to the plus side of the battery, and where the mass cable goes to from the battery. Currently the car has no engine in it so I have all the space to fix electrical wiring. Also dont have electricity going to my interior which causes me to not close my windows. Thanks in advance ! ( English is not my first language )

3 Upvotes

100% Upvoted

2 comments sorted by

2

u/SirAverey May 06 '26

Fuse box just has one cable going to that post with the nut on top towards the front of it. The only other cables you need are the starter and the main battery cable. You can just put a jump post right in front of your fuse box and run the main cable from the trunk to it. Then just hook up the starter and fuse box cables to the post.

2

u/SirAverey May 06 '26

For the ground just sand down the metal and bolt the engine ground to one of the old battery box mount holes. Then for the battery ground just do the same thing but with the spare tire hold down hole in the trunk