Cornpatch MO
Well-Known Member
Using stock 1968 318 Mopar non electronic distributor with the standard Pertronix points conversion. And the Pertronix coil that a ballast resister is not needed for. ( internal resister. ) As per the instructions , the red wire from the Pertronix is hooked to the positive side (+) of the coil which is also the post that 12 volts from the ignition switch goes to. The black wire from the Pertronix is hooked to the negative side of the coil... It has worked very well for over a year.
Now, I am installing a new Bosh tachometer retro Sun Super . Switch on the back is set to 8 cylinder. One post goes to dash instrument lights....One post goes to 12 volt switched source, so power on when ignition key is turned on. ....one post goes to ground. .... one post goes to the negative (-) side of the coil...
Problem : Turning over the starter motor with the ignition key switch, the engine will start and the tach will show some engine rpm , but as soon as I let off the key for the engine to continue running, it shuts off the engine and of course the tach drops to 0 RPM.. Any input would be appreciated... It has me stymied........................MO
Now, I am installing a new Bosh tachometer retro Sun Super . Switch on the back is set to 8 cylinder. One post goes to dash instrument lights....One post goes to 12 volt switched source, so power on when ignition key is turned on. ....one post goes to ground. .... one post goes to the negative (-) side of the coil...
Problem : Turning over the starter motor with the ignition key switch, the engine will start and the tach will show some engine rpm , but as soon as I let off the key for the engine to continue running, it shuts off the engine and of course the tach drops to 0 RPM.. Any input would be appreciated... It has me stymied........................MO