tach question

[RVRBUM2]

just got a new tach for the boat it has a 1 2 3 4 setting on the back and not the normal 4 6 8 where do i set it for a BBC

[roostwear]

The instructions :jawdrop: will tell you what dipswitch settings are for a v8.

[RVRBUM2]

Doesnt Say A Thing About What To Set It At That The First Thing I Checked

[McIntyrelocal]

i think its 4 for 4and8 cylinder engines, try that setting put it in and while its running see what the rpm is and if its wron you can change it right there it wont hurt anything.

[RVRBUM2]

Ill Try It Tomarrow And See What I Think I Guess

[McIntyrelocal]

Ill Try It Tomarrow And See What I Think I Guess
youl know by the soundrev it up if it goes beyond 4000 its right, i dont think it will go that high on any other setting.

[obnoxious001]

just got a new tach for the boat it has a 1 2 3 4 setting on the back and not the normal 4 6 8 where do i set it for a BBC
What brand is it, the website should have instructions? I just put an Autometer in a boat for a customer, and there was a sticker right on the tach that had the settings listed.

[RVRBUM2]

its a beede tach ive looked on their web site and all over the tack for anything that might help

[roostwear]

After looking through the installation instructions on the Beede site, it look like you have a diesel tach. They have 4/6/8 switch tachs listed, all the others have 10 dipswitch settings for alternator tachs (diesel) and flywheel counts.