On the touring models, the air temp gauge which usually doesn't work properly can be switched to an oil temp gauge with minimal fuss.

Here's a decent unit that will work well and is a pretty good match for the black faced Harley gauges.

Direct Harley Parts | Harley Davidson Parts & Accessories at Discount Prices | Riverside, CA (http://www.wallyscycleworld.com/virtualshop/vsquery_new.asp?PVMID=88&PVSID=3013)


It installs in the plug next to the oil drain in the pan like the pics below posted by "rocknrod" on this forum.

http://i149.photobucket.com/albums/s45/bills985/TempGauge.jpg


Removing the tank will making the wire run easier like pictured below.

http://i149.photobucket.com/albums/s45/bills985/Tempgaugewiring-1.jpg


The adapter is 3/8" MNPT-1/8" FNPT or 3/8" MNPT-1/4" FNPT depending on the sender you have. There's two different sizes as far as I know. Should be available in Home Depot or a good hardware store.

Some Gauge Wire info when installing the HD Oil Temp Gauge:
Gauge wires are
Orange = Pos
Black = Ground
Blue/V = Temp Signal

http://i149.photobucket.com/albums/s45/bills985/Tempguagewire.jpg


There is a bulb color sleeve on the gauge light bulb, make sure it matches yours (you can use the one off your old gauge)

http://i149.photobucket.com/albums/s45/bills985/Tempguage3.jpg


The back of the New Temp Gauge prior to final install:

http://i149.photobucket.com/albums/s45/bills985/Tempguage4.jpg

I wish I had seen this one earlier. I bought the one from Harley, and it's much harder to install and doesn't work will either. It's reading about 20 to 30 degrees colder than it should.