So my donor engine for the Case 430 swap has a 24v alternator which isn't going to work for me, however I found a Bosch universal type one but it only has the B+ and D+ terminals (simplicity at its best!), no P terminal for the tachometer. According to the wiring diagram the thin red wire goes to the P terminal which goes.to the tachometer input on the cluster, question is: what does it do as there is no tachometer as far as I can see? Will everything work without it connected?
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