Tach problem after Wire Plus install

Energy One

Olde Man

Active Member
I did not shitch the green wires out as Splitlog suggested. My 06 K9 has a Green A5 from the ignition module that make up to the B47 Yellow tach port wire. I have read the resistance from the ignition connector to the tach connector while wiggling everything I could get my hands on, except my dick, and read a solid 3 ohms. This should indicate that I do not have the wrong wire connected and that the connections are good. This thing is a little bit FU. At times the tach will stay off untill I cycle power all the way off then on with the ignition switch. The LED lights on the WP indicate that the ignition and acc are still on. The wiring diagram indicates that the high beam indicator on the tach board should work independantly of the tach power but it will take a crap at the same time. This would point to a ground but the turn signal indicators still work and they share the ground so that rules that out. The only significant electrical problem that I have had with the BD is that I was one of the few people that could not run a HID with my EHC as it kept killing my dog while it was running down the road. This is one of the reasons for the switch to the WP.
 

Olde Man

Active Member
I don't have it fixed yet. I beleive that the problem could be in the ground, 12v power or the pulse width modulation input. I think that when the power or signal inputs is interrupted the tach board can shut off untill the key switch is turned off then on. I am going to wire the 12v and ground to the battery with a fuse and switch and see if that will isolate it from the wire plus and any other problems. ???? Later, Olde Man
 

BigD07

Member
I don't know if you got this issue fixed yet but I had the same issue and figured out it was the WP ignition switch I bought with the kit. I bought a new switch and haven't had any issues since.
 

Trashman

Member
Just fired the dog up after completing the Wire Plus install. Dog had NOT been started for a year and a month. Installed the Wire Plus and the new HD style switch. Gave the old girl two full twist of the throttle, hit the start button and after 5 seconds of cranking she busted off. WHAT A BEAUTIFUL SOUND!

Let her run for about a minute and shut her down.

Two problems that I noticed:

1.) NO Tach sweep OR Annunciator lights!

2.) I run a crankcase breather and after shutting her down I noticed oil dripping from the crankcase breather filter. Normal after a year of not running?
 

Olde Man

Active Member
BigD07 I had purchased a much less expensive switch when I did the WP. I thought that it might be the problem so I bought the expensive one and installed it. The switches were the same, hard to imagine. The problem did not go away. The only thing that I did different was I was able to use the threaded nut to install the switch and not RTV. Maybe the hard mounting to the coil cover motor mount is causing the switch contacts to bounce when I hammer it. I will take it out and try it.
 

BADOG

Active Member
Had the same problem. Not only tightened #46,47, and 30 but also found connection on ignition switch to be bad. It only happened to me when I hit high rpm's and also in the extreme heat of summer. I put in a heavy duty ignition switch, problem solved.
 
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