Originally Posted by brokedown
I'm planning to add a temp sensor and extra cooler to the Wanderlounge, so I'm very interested in specifics people have used on their AT545s!
I used an autometer 140-300 oil temp gauge. It was an old gauge I had laying around, I'd guess it to be pn 5447. I purchased and used their #2258 sender which is 1/8 npt, and includes 3/8 and 1/2 adapters.
I put it in the cooler line leaving the transmission. It's the forward line on an at545. Originally it has an elbow coming out which uses an AN fitting connecting it to the steel hard line going to the cooler.
I took a T-fitting like this.
Female end went to the elbow on the trans. The male end opposite of it went to the steel line to the cooler (line was shortened and re-flared to 37ｰ). The T in the connection was then tapped for the proper thread.
IIRC I used 1/4 npt in the tee fitting which then required me to use 1/4mpt - 1/8fpt adapter, which wasn't included with the sensor. Not a big deal though because the adapter is available at most hardware stores.
The whole deal went pretty easily and works as it should. But I have a shop full of tools so YMMV.