The blades on my Timecutter stopped engaging with the pto switch today. It happened once and I fooled with some wires and let it cool off and they came back on when I tried it again. Now, it happened again and I can't get them to engage at all after a couple of hours. I pulled out the multimeter and the pto switch is working properly and where the wiring harness connector hooks to the blade clutch is getting power when I engage the pto switch. Any ideas on what else I can check? I know the blades are tied in to the seat switch somehow but it seems to be working properly. One thing that confuses me is that there is a 2-wire female plug with a yellow and black wire just taped to the side of the harness going up to the seat switch. It is not hooked to anything. Any idea what the purpose of this is? I can get a pic tomorrow with some light if that would help. Thanks.