Electrical 85 tachometer keeps blowing fuse

[marshall101]

85 Gt tachometer keeps blowing the fuse.

 

[jrichker]

85 Gt tachometer keeps blowing the fuse.

Look for failed components in 12 volt input such as D1 diode, 180Ω resistor, Zener Diode 6.2 volt or the 47 uf capacitor.

 

[marshall101]

Thanks