Trailtech Vapor Install on a 1998 Yamaha WR400 problems
Posted June 02, 2007 - 10:48 PM
I'm just finishing the Vapor install on my 98 wr400, I'm having some troubles with the tach when the unit is powered from the bike.
I have both grounds comming back to the coil mount, the tach wire connected to the splade connector on the coil and the power coming off the headlight
Currently if i leave the power lines disconnected, it works perfectly. But as soon as I hook up the Unit power, the RPM roughly doubles and becomes a lot more jumpy where as before hooking up power it was steady.
Anyone here have any ideas?
Posted June 03, 2007 - 03:12 AM
Posted June 03, 2007 - 07:50 PM
I also tried running the power wires directly into the head light plug, red for power black for ground. Still the same problems