wideband sensor - what pins draw\sink the highest current....

[Volvo850r]

Hi All,

Thought id start designing my wiring harness ready for when i get my vems ecu. Im using a std ecu connector to interface the vems ecu to my std wiring loom.

I have a selection of pins avaliable on the std ecu to connect the wideband sensor to. I know i need 4 for the wideband (12v supply will be supplied seperately):

EC18-pin13 to WB6-pin1 (Nerst Cell Signal)
EC18-pin7 to WB6-pin5 (WBO2 Pump-)
EC18-pin18 to WB6-pin4 (WBO2 Heater)
EC18-pin9 to WB6-pin6 (WBO2 Pump+)

I have 2 pins that are use a larger spade so would like to use these for the wires that draw\sink the most current.

So in order from the above, what pins flow the most current.

Thanks.

[GintsK]

The only wires with significant current is heater wires.