R.T.D.H.S.P.

I have a quick question. I have all necessary guages except the fuel pressure guage (do have 5psi warning light though). I want to install the Autometer Sport Comp series to match my others. I see some online that say "must be mounted outside" and some that don't. What is the difference? TIA

BBA

Mine is in the cab because i have a isolator under the hood that is filled with anti-freeze which runs to the guage. Its just a safety precaution.

bigmack2500

If you get the auto meter gauges the fuel pressure has an electrical sending unit, that is how my ultra lite works.

2500Ram

My Ultra lite is mechanical although I originally had it with an isolator maybe that's the difference, that is MIA now. SS braded line into the gauge in cab, no problems.

Good luck.

wcbcruzer

Mounting outside is a safety thing. I don't think it's as big a deal with diesel than it is with unleaded. I have mine in the cab with stainless steel braided hose. A little overkill for some, but that's how I like it.