<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by OPD66 &raquo;</TD></TR><TR><TD CLASS="quote">One last question. Can I leave the original fuel gauge wire attached to the sender and attach the Mercmonitor harness also? That would allow my original fuel gauge to continue working along with the Mercmonitor. Thanks</TD></TR></TABLE>

NO. You MUST disconnect.... let me repeat that..... YOU MUST DISCONNECT the original pink sender wire from the tank sender, eliminating the "analog" gauge function.

Failure to do so can result in improper readings, as well as a 12V "backfeed" throught the PCM's 5V circuit (which can actually damage the PCM).

If you would like, se can set you up with a "System Link" fuel gauge to replace the analog gauge with. You're already wired for it.... simple "plug and play".