Hi,
We have imported a 1940 custom Merc from America to New Zealand, it has a IntelliDash By Nuvatec installed in it. The temperture gauge doesnt show anything, we are assuming that the sender unit is not working. Do you have a sender unit? The numbers on the sender are: CFS-176 Tod 310322 824.
Could send you a photo of it if you require.
Thanks so much for your time.
John and Anna