How do I cap Tach opening?

[trackfiend]

I've ordered an electronic tach/speedo for my build. Now I need to figure out what to use to plug where the tach cable goes into the head on my 81 450. Any ideas would greatly appreciated.

[SqDancerLynn1]

Small freeze plug, make a small aluminum disk to fit

[sharpy]

Katanas have them so they might fit.

[scottychop]

Use

JB Weld on the old tach cable fitting. Just enough to fill the hole.

[ChicagoBob]

You can replace the tach drive in most GS models with the block-off plug Suzuki used in later (electronic tach) models. Bike Bandit part nos. 1064353 (490253-001) for the plug and 1064362 (490260-001) for the seal band (or use the band from your existing tach drive). Less than $15. These parts are listed for the 1982 GS1100S, GS300 and others.

[trackfiend]

Thanks guys. ChicagoBob thank you very much for the part numbers.