I got an electric oil pressure guage and I wanted to keep the stock gauge functional too..now can someone tell me what T- fitting size I need..?? Thanks
When I did my gauges, I just went to an auto parts store that had many brass fittings. I did one for the water and for the oil. I just pieced it together after a few minutes and a little help with all senders. I have to do it again in a week myself since I have new gauges for my new car. That is what I will do.
IIRC: stock sender is 1/4" NPT fittings. many aftermarket gauges are 1/8" NPT. so, as Chris (and i) did, take the stuff to the parts store and match it up, piece it together. i had to run an extension (1.5" IIRC) off the hex tube on the block to get clearance for two elec senders. then some adapters to adapt the Tee fitting for each sender, etc.