merc moniter install help

[tcfeedmill]

trying to install merc moniter I have the j-box, female to female harness, and merc moniter harness I am replacing the tach gauge and wanting to leave the other gauge which has my trim, water pressure, volts, fuel gauge in it when I hook up the harness from the engine to the j-box then to the merc moniter and then hook the harness from the other gauge to the j-box using the female to female harness the trim ect gauge will not work but the merc moniter seams to work fine any help is grateful thanks

[Triton19x2]

You might want to post on the Merc page specific for your engine. You will need to post your motor serial number for them to help you.

[WSfishin]

I have never been able to get both to work. Only way to do it would be an independent sending unit for the dash guage.

[tcfeedmill]

Thanks for the help guys I talked to Tim at phoenix and he said that I would lose that gauge with the merc moniter also got all I need on the moniter except fuel gauge so was wanting to try and keep that working

[rtamplain]

Are you happy with the merc monitor install? i was considering doing the same but also didn't want to give up current gauges... even though fuel gauge isn't very accurate, i still like to see it.