that and you have to use an SR5 OP sending unit
heres the link to Brandons thread. I did it in my 83 and its easy just take your time
http://board.marlincrawler.com/index.php?topic=2973.0
Thanks for the replies guys...<BIGThumbsUP!>
Kyota, whats a SR5 OP sending unit? You mean something like the wiring harness that plugs to the back side of the gauge cluster? Or could I just "run" a wire?
Also, will the igniter "yellow wire" be fine for the connection to the tach and/or will I need a wire to the coil too?