boost and EGT gauges not working

[PlayItForwrd]

Our Allegro has Banks electric boost and EGT gauges. Maybe they were 'add-ons' because they're all by themselves on the left side of the dash, and don't match any of the other gauges....



Both are dead as doornails...

The electric feed is gray-covered with 5 wires.
The boost gauge has a white wire to + and a black wire to -
The EGT gauge has a red wire to + and a black wire to -
The 5th wire is a lonely green wire, with a male spade plug that's just dangling, not connected to anything--

FWIW, the light wires have never been connected--

I don't know if any other Banks stuff has been installed? (sending units at least?) And I've spent an hour trying to find an owners/installation manual, with no success. All I DID find is that in all of wiring diagrams I found, none contains any green wire?

Any help would be greatly appreciated!

[lyledavid]

Play it forward
Call Banks at 888-839-2700 and they will help you download the manuals you need. 7 am to 5 pm pacific time.
Lyledavid

[pauljahn5]

Find the control box for the Banks unit, it will have two plug's with release clips and one large plug with a rotating lock. The box is sometimes mounted in a high vibration area and the five wire connector you located under the dash will terminate at that box. My coach (99 Diplomat, Cummins ISB) had the control box mounted on the intake, the vibration caused the wires to break off in the connector. I bought a new wire harness from Banks, moved the controller to the framerail away from water, heat, etc. and connected the new harness. Gauges work fine now.