1990 FLHTC guages not working
Stellar HDF Member
Joined: Oct 2005
Posts: 2,378
Likes: 223
Agree with bluharley. I'd also check the speed drive on the front wheel and make sure it is greased and working well and that the tab is securly placed in the slot of the brake rotor. Then pull the fairing and check the cable and make sure it is engaging the speedo correctly.
Road Warrior
Joined: Mar 2007
Posts: 1,959
Likes: 2
From: Florida
You can check the cable without pulling the fairing...I just learned this. The sheath on the cable screws into the drive body by 3-4 coarse threads. You can unscrew it by twisting the sheath counter clockwise at the drive unit. Once it's free, pull it out of the drive, and if the cable it broke, you can just pull it out of the sheath. I put in a new one by pulling the instrument panel and replacing the cable at the speedo and then using the twisting action of the sheath to twist it counter clockwise and let it return into the drive. Ok, you're probably saying WTF????? Maybe someone else can explain it better.
Cruiser
Joined: Aug 2012
Posts: 119
Likes: 9
From: Lake Helen, Florida
For sure before you pull the fairing check the speedo driver on the front wheel like 89FLHT said. My driver was bad and I didn't realize it until I pulled the fairing off and found out the cable was fine. Then I checked the driver and the tab had pulled out of the slot in the brake disc. Replaced the driver today on my 88 FLHTC and the speedometer works like a charm now. It's just easier to check to see if anything obvious is wrong with the driver first before you pull the fairing.
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