Welcome to the seaforum Dan. Here is some information on the timer;
Timer Verification;
The timer is integrated into the MPEM. Always confirm that the fuses are in good condition. To confirm operation of timer, remove the safety lanyard from switch. After 5 seconds delay, depress start/stop button once. The timer should stay on for 33 seconds (for example, the gauge(s) will be activated) and than turn off.
If it is the timer it is built into the MPEM,( Multi Purpose Electronic Module)and might need replacing to correct the problem.
Karl