I've had this issue since the beginning but now it seems to be worst I've put a battery in to run the gauges but it'll only run them for a 1/2 day replaced the fuel pump but this weekend cluster started to flicker and check engine came on. I've unplug the oil pump put it on it's own 12v started the sled get 9.8 on the meter give a little throttle and it jumps to 14.3 and stays there. Put the oil pump back on and it won't climb above 9.8 wondering if anybody else is having a problem like this. A little scared to put the oil pump on the battery because I'll never no when it'll die.