Tach issue.
My dad has a 91 suburban and has installed a tach. He put it with the -/+ but wondering where to exactly put it on distributor. I know on the HEI distributors there is a spot that says tach but on these TBI setups i dont know where exactly to hook up. Im sure there is probably a topic about this already and i am sorry to ask, but link me the topic if it does exist already
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