Do you have a trailer light adapter harness hooked up? If so, take it out and check yer lights again. <img src="/forums/images/graemlins/wink.gif" alt="" />

Basically...you have a short in the turn signal system. Could be from corrosion in the socket or in the harness adapter. <img src="/forums/images/graemlins/wink.gif" alt="" />

1998 T-100 Xtra cab SR5 2WD Auto; Roadmaster Active Suspension; Yokohama Geolander HT-S; lowered air dam; full belly pan; 4? diffuser; 11" side skirts; dual transmission coolers; 67% grill blocked; Auto-RX'd; ScanGauge II/Ultra-Gauge