I am thinking of making the attached circuit for my off road vehicle and I was testing it in stages as I went, and I found that the circuit wouldn't trigger consistently and I would have to disconnect power to get it working again and and if I grounded the rst, it wouldn't trigger afterwards, then, after a while of playing with it, I think I fried it, so I turned every thing off, turned out the lights and went to watch TV. Any one have any ideas what's happening or what I doing wrong. power was 13 vdc, R4 = 1meg, C2 was 47uf, then 35uf, then 10uf and 1uf. The 1M and 47uf ran for about 5 minutes, If I remember right. the switch for the trigger was touching a wire to ground.
Kinarfi
Another problem I was having was in Spice, I had to NOT hook up the resets or it would hang as soon as either reset was grounded.