5 batteries at the negative end of the pack with 500 amp 200VDC fuse (not shown in this old pic).
500Amp shunt for the 1000A E-Meter, prescaler for the E-meter (hidden under brake booster).
The round white contactor is for the dual ceramic element 3000 Watt heater!
The large black cable on the left with wires to each battery is for individual battery charging
and monitoring.
MR2 page