Guest Will C Posted April 26, 2015 Share Posted April 26, 2015 I'm trying to install a digital water temp gauge in my 1919 Model T. The gauge works fine as long as the car is not running but as soon as I start the car it goes black. I do have an alternator system. The gauge is silmer to a Cobalt brand but a cheaper brand.( Which I'm starting to think this is the problem) My voltage with the car off is 13.48. With the car running its 14.85. I've tried running the power straight from the battery and also off my fuse block. Iv run the ground from the battery and I then tried running the ground to the block. Thinking that the problem may have been electrical noise from the coils I installed a electrical noise reducing capacitor from MSD but still did not help. Thinking that maybe it was getting to much amperage / power from the starter I installed a toggle switch to turn off the power to the gauge while starting the car and then turning back on after the car is running and still the same problem. I'm thinking that maybe the gauge is getting too much power/ amperage but I'm not smart enough to know how to reduce the amperage / voltage going to the gauge. So before I spend a bunch of money on an Auto Meter Cobalt brand gauge I want to make sure Iv covered all my bases on this one. Keep in mind that the electoral system in this car is of my own making. It's a modern fuse block with the power coming from the battery and all the lights and other wiring are now protected modern by fuses. Model T's did not have much of an electoral system to start with so if something should happen it would cook all the wiring in the system. Im stuck now, Not sure what else to do other than to either buy a new name brand meter or scrap the whole idea. I also tried installing an old school capillary / mechanical type gauge but the sending unit was too long to be installed into the gooseneck. What am I missing? Link to comment Share on other sites More sharing options...
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