Smart car gauges

The Smartcar came with the optional tachometer and clock dash pods. I liked having the tachometer but I thought the clock was kind of worthless. I'd much rather had a voltage gauge. I'd really prefer to have voltage, coolant temperature, and oil pressure gauges, but I wasn't sure if there were locations for the coolant and oil pressure senders. I did some research and poked around the engine compartment and decided I could make it work so I ordered some Autometer Phantom gauges. These kind of match the factory dash pods. I made a power hub to supply power to the gauges and other things. This will allow the voltage gauge to read directly from the battery. The factory oil pressure sender uses a 1/8" British Standard Pipe (BSP) thread as opposed to the normal National Pipe Thread (NPT). I did some searching and was able to find a 'T' adapter with BSP threads on each end and a 1/8" NPT port in the middle. Exactly what I needed! Here is the oil pressure sender and the adapter installed. The factory sender wire was long enough to reach further and the plastic shield that covers this area still fits. Internet searching found that this hose provides coolant to the head. It is easy to access so I decided to make a fixture to hold the sender. I used a 1/4" NPT cross and came up with this. I read that it is important that these motors not get air bubbles so I included a valve to drain any trapped air since this will be the highest point for the coolant. The coolant temperature sender installed. The nut for the valve lever makes a convenient connection for the sender ground. Despite three layers of teflon tape the sender has a good connection to ground. The finished product.