01-26-2005, 06:13 PM | #1 |
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h.e.i. tach problem
I coverted from points to h.e.i. a couple of months and personally I beleive that it is the best thing since sliced bread...lol anyways my tachometer (which I know is good because it has a shift light and I can still set the shift rpm so I now its functioning correctly) the tach wont work, I know for a fact that all wires are good and ran correctly and all fuses are good and that sort of thing, is there any way some part of my dizzy is bad? I had tach w/points and no tach w/hei (the tach is hei compatable)is there some type of selinoid in the dizzy for this?
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01-26-2005, 07:24 PM | #2 |
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I know this is a silly question but did you hook to the tach terminal in the HEI dizzy? Make sure your wire is good...could have messed a crimp.
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01-26-2005, 07:55 PM | #3 |
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if you are using a crimp connector at tach terminal sometimes it will go beside the terminal and not get connected but it will look like it is
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01-26-2005, 08:19 PM | #4 |
its all about the +6 inches
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If the shift light is working, then the tach is getting the signal from the HEI. Only one wire that runs this, the green one.
Sounds like yout tach just crapped out on you. |
01-26-2005, 08:24 PM | #5 |
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If the green wire is good then it is the tack needle as.
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01-26-2005, 10:01 PM | #6 |
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the tach is brand new and I just tested it on my old merc. w/ points and it worked fine. So apparently there is some type of problem with my hei setup. I am going to go pull the cap and see if there is anything that looks missing or broken because I got the tach used from a junkyard. any other suggestions?
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01-26-2005, 11:21 PM | #7 |
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o.k. just looked at all of the connections and heres how it is on the dizzy cap. my main power wire connects to a terminal that then connects to the cap, this terminal has a brown wire coming from it which I was told is the tach. wire. I got to thinking doesnt the tach run off of negative pulse from the coil? so how could the tach wire be connected to the positive main wire? should I splice into the (-)negative wire coming from the cap and going into the dizzy base?
Please if anyone has a digram for the hei dizzy with all of the correct connections please post it!!
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01-26-2005, 11:31 PM | #8 |
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just connect it too the Tach terminal on the cap, not anywhere else or else you could fry your tach, check to see if one of those skinny skinny wires going from the coil and soldered to the metal tabs, broke off at the solder joint
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01-26-2005, 11:57 PM | #9 |
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Does the gauge metal housing have a ground to the truck body?
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01-27-2005, 11:05 AM | #10 |
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the gauge is grounded good, I am at my wits end on this whole stupid tach.
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01-27-2005, 12:31 PM | #11 | |
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Quote:
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01-27-2005, 06:46 PM | #12 |
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thats exactly how I have it wired, I am going to take my carb off and give it a good thurough cleaning tonight so I will take the cap off and check everything and maybe get a new one.
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