Try running a separate ground wire directly from the battery to the tach ground. If the flicker stops then it IS a ground problem. Otherwise you're just chasing your tail. You say you "Tightened" the ground connections. The proper procedure is to dismantle the connection, clean down to bare metal with a wire brush or sand paper, and re-assemble. Some use silicone grease or chassis grease on the bare metal to resist corrosion. <I see NO ground wires in the vacinity of the RH or LH horns...where are the wires that are supposed to be grounded by the LH horn bracket supposed to be coming from?> The horns have two wires, purple/black and black. The black wire is the ground wire. Dave Sontos Vin 02573 -----Original Message----- From: drdhdmd [mailto:doctorDHD@xxxxxxx] Sent: Tuesday, December 28, 2004 10:57 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Tachometer Flicker OK, I checked and cleaned fuse #1. I have a new rotor, cap, wire and plugs. I checked to see if the flickering was affected by loading and it doesn't change with lights, A/C, fans and or defroster. I tightened the main frame ground by the RH trailing arm bracket. I tightned the auxilary ground on the RR frame member. I see NO ground wires in the vacinity of the RH or LH horns...where are the wires that are supposed to be grounded by the LH horn bracket supposed to be coming from? To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/