ok now im clueless

[AccordNut]

i had a problem with my tach bouncing around, soooooo i replaced the entire ignition system not too long ago...accel ss coil, new ngk wires, used dizzy from ebay, new plugs....and i even replaced my gauges b/c i messed up the fuel/temp part. so all that is replaced and my tach still skips and bounces around...most noticably when i hit the gas hard. whats the deal? the bouncing is exactly the same so im pretty sure the used dizzy isnt the prob b/c how could it bounce and skip exactly like the old one

[mouchyn]

a wiring problem, most likely. either the wires between the coil and the cluster are bad or there's a faulty ground on the cluster's connectors. time to bust out the multimeter and get to testing.

[HondaBoy]

when i've heard about that before it was this black resistor thing. here's some pix of it. its the black square screwed onto the coil bracket. i hope that was the right thing. if it is, then its easy to replace, just cut the wires and solder on a new one. i'd say get one from the junk yard, you could easily yank that and no one would know.
http://photobucket.com/albums/v260/HondaBoySi87/th_cd57444c.jpghttp://photobucket.com/albums/v260/HondaBoySi87/th_4497c5ce.jpg
click below for full size pic
http://img.photobucket.com/albums/v260/HondaBoySi87/cd57444c.jpg
http://img.photobucket.com/albums/v260/HondaBoySi87/4497c5ce.jpg

[mouchyn]

"radio noise insulator"

if that's bad or not connected properly, that will certain cause gauge problems!

[A20A1]

How is the protective wire boot that covers the coil terminal? you may want to add electrical tape around the connection.