Grounding the engine

I always add additional grounds to my old vehicles too. I've chased enough marginally working electrical devices to a ground problem that I think the additional connections are a good practice. One in particular is a direct route from the neg. battery cable to the radiator core support. I also make sure the one from the engine to the firewall is clean with good connection.

The "tuner boys" go so far as claiming additional horsepower with their spider like "ground distribution kits"!!! Those probably do more for the 14 speakers and multiple video/TV screens than horsepower, but a good ground eliminates a lot of frustrations.