Battery Relocation

A step-by-step guide to relocating the battery in a 1984 MA61 Supra

The Cable

You'll need a few metres of the stuff, with nice solid terminals crimped and soldered on the ends.  The cable I'm using is probably overkill, but generally speaking the thicker the better!

The Firewall

	Getting the cable through the firewall is the hardest part.  Here you can see the rubber grommet in the firewall visible from the passenger side wheelarch.
	Pry the grommet out of the firewall and feed the cable backwards through the hole.  I find it's easier to go around the grommet first, and feed the front end of the cable through the grommet later.
	This is where the cable will appear when you start feeding it through, behind the HVAC blower in the passenger footwell.  I have removed the glovebox and surrounding trim for easier access.
	Once you've pulled the cable through the firewall, leaving just enough length to reach the starter motor, feed the remaining length through the rubber grommet.  Depending on how big your cable is, it may be necessary to enlarge the hole through the grommet.  I hacked it a little with a knife.
	Replace the grommet in the firewall like so, and feed the cable through the existing hole in the inner guard.  Neat huh?
	This is where the cable appears in the engine bay.  Just run it down to the starter motor, bolt it to the terminal, and you're done!  Well, the front part is done anyway.

The Interior

	Remove the plastic strip along the sills, and you'll find a convenient plastic conduit hiding under there.
	Run the cable through the conduit like so.
	Neat!
	The conduit ends next to the back seat.  Run the cable under the seat and bring it up next to the drivers side shock tower.

The Hatch

	This is what you should be left with in the rear of the car.  Remove the drivers side plastic trim, because we'll be hiding the cables behind there.
	It's important to have a good solid earth point for the negative terminal of the battery.  The mounting point for the rear seatbelt is just about perfect!  You can also see the positive cable has been neatly hidden under the shock tower cover.  Also note the circuit breaker on the end of the cable - an important safety feature!
	Here we see the circuit breaker bolted to the side of the car, and the remainder of the positive cable in place.  The battery is positioned in its box in the corner, ready to have the cables attached.  All we need to do now is make it look neat.
	With the plastic trim back in place it's looking a lot nicer.  The cables come out of the access hole for the rear windscreen washer reservoir.
	With the stowage hatch cover back in place and the battery box lid on, the cables are nearly invisible and you'd hardly know the battery had been relocated!
	Looking good!  All that remains now is to run a vent tube outside the car, and secure the battery box to the floor using self-tapper screws and the nylon straps supplied with the battery box.  And that's the job done - one afternoon of work is all it takes.  Easy.  :-)