2 lc1's + 2 vehicles + 1 eio
 

so i recently picked up 2 lc1 widebands to put in my car/truck.. I'm interested in running them in a narrowband/wideband configuration, but also want to be able to hook up both to my hptuners.. i've been referencing this source here on how to hook it up
http://www.audiohelix.com/tuning-documents/lc1/lc1.htm

instead of running all grounds to eio i could run them to chassis ground, and then just run the heater ground to the battery.. and leave a wire run into the car to tap into the eio when i want to use it? from this diagram it seems like the eio has to be in the car all the time, i need to be able to move it amongst vehicles.

Any help would be appreciated! :chug:

on hptuners website you can buy another eio plug for like 5 dollars.

yes, but without the eio plug hooked up to the mpvi it wouldn't be grounded...thus the wideband wouldn't be working, i don't want to have to move the mpvi around everytime i drive something different