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.
The type of thyroid cancer you have determines treatment and prognosis. Types of thyroid cancer include: 1  Papillary thyroid cancer. 2  The most common form of thyroid cancer, papillary cancer arises from follicular cells, which produce and store thyroid hormones. 3  Papillary thyroid cancer can occur at any age, but most often it affects people ages 30-50. 4  Follicular thyroid cancer.