If you have an HEI distributor with a Tach Output you can use the Tach Output from the distributor. Due to the high voltage of the signal from the HEI you should use a tachometer filter to prevent damage to the tachometer. Coil Pack or Individual Coils (Distributorless Ignitions).
Yes, thyroid disease can affect your mood â primarily causing either anxiety or depression. Generally, the more severe the thyroid disease, the more severe the mood changes. If you have an overactive thyroid (hyperthyroidism), you may experience: 1  Unusual nervousness. 2  Restlessness. 3  Anxiety. 4  Irritability.
You may need to take thyroid medication, in addition to medications for bipolar disorder, to keep thyroid levels balanced. Common side effects of other mood stabilizing medications include: 1  Drowsiness. 2  Dizziness. 3  Headache. 4  Diarrhea. 5  Constipation. 6  Heartburn. 7  Mood swings.