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Join Date: Nov 2007
Location: Chandler, Arizona
Welcome. I am also a longtime builder and fan of small block Chevys. I have drag raced a few of them. Be warned the Vulcan engine is a lot more complicated than a sbc.
As for the tach, you need to remove the entire instrument cluster, including the speedometer and warning light panel (it all comes off easy, just 2 bolts if I remember correctly), then remove the chromed plastic housing on the tach, then you can get the the rubber mounted bolt that holds it in place. A 1/4" drive socket with a swivel should have no problem getting to the bolts from the side. I do remember I didn't have to remove the headlight housing, but you will have to remove the headlight lens/trim ring/reflector/bulb holder in order to disconnect the wiring. You can then pull the wiring through the hole in the headlight housing when you remove the instrument cluster. There are quite a few wires, but they are all color coded.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike