tach help/advice make waves instrument corporation super pro

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1970-dart

1970-dart

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first off thanks in advance

1970 dodge dart swinger original slant 6 car and now a v-8 and all stock electrical/ignition stuff was swapped over from the 74 swinger parts/swap donor car.

i have looked online and here and cant seem to find much relating to current problem. it is a super pro 1288 tach and have it wired as instructed.it is a new install and i have checked all my connections including the coil to engine ground and also tried another coil.


white-light switch
green-negative side of coil
red-switched power direct to the fuse box
black-to negative side of battery
switch set to 8 cyl

at an idle the needle stays on zero until i rev it up and it jumps from zero to around 1000 then seems to work nornal from that point up. and when when let off the gas and rpms settle to less than around 1000 it drops directly and fast right back to zero

i hope i included enough info for you to help

thanks don







View attachment tach1.JPG
 
Do you have it set for V8?? There should be a slide switch on it to select 4-6 or 8.
 
Bad Sport said:
Do you have it set for V8?? There should be a slide switch on it to select 4-6 or 8.
Click to expand...


yes set to v-8 and made sure it was before starting the first time

and tried other settings as well with no changes
 
Sounds like you have it wired correctly. I would suspect a tachometer defect.
 
i called them and they said send it back and they will replace it with a new one free of charge.I told him that i was not the original purchaser and it had been just sitting around in the package for 6-7 years. he said no questions asked full ten year warranty and we want all our product looking and working good so send it back. I will now be replacing all my gauges with them.
 
make waves instrument corporation super pro

just adding the whole names and info for later searches by members

Make Waves Instrument Corporation
Address: PO Box 236, Buffalo, NY 14231
Phone:(716) 681-7525

that is addy i found online and this is the addy he gave me was 4444 Broadway Depew NY 14043. so maybe addy changed but number is the same
 
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