When looking for another sender, I suggest you to look for one from B3, B4, C3 or C4 A100, unless you're sure that sender from "something else" has identical function - I once tested 10 bar gauge installed in one B2, turned out that this gauge expects the same resistance range as 5 bar ones like yours or mine - which means there's also senders with 10 bar range with identical resistance... So if you would find such sender and install it in your CQ, you would complain about "low oil pressure as shown by aux gauge"
