Re: Airguide tach for ’79 Evinrude 35 question

[wetwillie]

Okay, that confirms that we’re referring to the same item. As for potting, that was term I always heard used for the practice companies used to prevent someone from determining what components were used to make a particular electronic device. The module housing is filled with a black epoxy like substance that’s hard as a rock. The only labeling on it refers to the wire colors and where they are to be connected to. In this case 1. Red lead to — Ind (or red Ind lead). 2. Green lead to –Ind (or green Ind lead). 3. Grey lead to "Tach lead. 4. Black lead to "Tach Grd". 5. Yellow lead to + 12 volts.