Under Construction

September 29th, 2008

Please pardon our dust while we improve the website over the next few days.  If you need anything please feel free to call 616-301-2888 or email Mike.  Thank you!

Q & A: Faulty Tach, Bugeye

Thursday June 28th, 2007
Q & A, MGA, MGB, MGC, MG T-Type, Midget
John:
Having just read your tech. articles in May/June MGB DRIVER, I thought you may be able to offer insight into my 1959 Bugeye tach. conversion problem. PO has converted it to NEG. ground. I purchased a used electric tach, the kind with the wire loop that fits in the hole where the mechanical tach is. Following Frank Clarici's instructions, I open the new/used tach. and it appears that the green wire and the resister have been swapped by it's PO. Before hooking up the tach., I ran a wire from the hot (with ignition on) side of switch and touched the other end to either side of the coil. when touching to the coil, engine started to quit. Shorting something out. Something is BACKASSWORD.
Do you have any clues and where I should start troubleshooting?

Thank You
Paul

Paul!

The earlier style tachometer senses the pulse on the power side of the coil. The later tachometers use a pulse from the distributor side of the coil.

The tach must have power -- from a GREEN, fused ... read more