MGB electronic distributor w/vac Advance, 123 Ignition
123 Ignition brand, MGB electronic distributor w/vacuum advance port, negative ground cars only. The 123\MG-4-R-V is designed especially for the MGA and MGB. All the advance-curves, that were ever specified for these cars, are integrated into this product.
The unit offers a maximum total of 16 advance-curves to be selected by the end-user.
Comes with complete instructions