09-07-13, 11:05 AM
As said both are just on/off switches. The large one for the fan is 16mm x 1.5mm pitch parallel thread, a fairly common size for such things. I not absolutely sure about the smaller one for the warning light but I think it is 1/8" J.I.S. tapered thread (i.e. 28 tpi) and is interchangable with 1/8 BSPT. That would not be interchangable with 1/8" NPTF (27 tpi) which is also a fairly common fitting for temperature senders etc.
Maybe a "T" piece type adaptor in the large thread would be the way to go, but not a lot of room round there.
Maybe a "T" piece type adaptor in the large thread would be the way to go, but not a lot of room round there.