Connecting two egt gauges

[00farmcummins]

Is there anyway i can splice in my quadzilla egt gauge in with my autometer thermocouple wires i know both have two wires. I dont want to have to drill and tap another hole so i was wondering if there was any way i could splice into my other one. And if so how do you know which wire goes to which one i dont want to switch them and frie somthing.

 

[2141pete]

Alot of guys will say no it will read wrong but I Rand my adrenaline and Stewart Warner gauge on the same lead.

 

[00farmcummins]

how do you know which wire goes to which i have a black and orange on the adr. and a red and yellow on my autometer phantom