Installing oil temp gauge in FLHTC

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May 30, 2009 | 12:50 PM

#21

tslonige

Road Captain

Joined: Jun 2008

Posts: 550

Likes: 1

From: Arlington, TX

The Rodger McEwan oil temp guage fits the batwing and the color matches the other guages. I put the one FLTSE 2002 - Present in my 06 StreetGlide and it comes with all the wires and fittings. Works great in place of the air guage.

May 30, 2009 | 03:51 PM

#22

UALCapt

Cruiser

Joined: Jan 2009

Posts: 139

Likes: 2

From: Northern Virginia

Thanks everyone for great info. Particularly to SOOS for the photos of the oil pan. The quote with those photos is cause for more concern however.

Is the "upward flow channel" (where you guys are placing your temp probes) the source for oil flow from the pan to the engine? If so, is it a good idea to partially block the small channel with a temperature probe?

My probe is 1/4" diameter by 2" long and therefore extends about one and a half inches into the pan. I am using an automotive oil temp gauge so the probe is mechanical (hence long), not electro-mechanical.

So I am hesitant to place a two inch probe into a small (1/2"?) diameter oil channel - especially if this channel supplies oil flow up to the engine (or oil pump).

Any thoughts on this?

May 30, 2009 | 04:32 PM

#23

iclick

Extreme HDF Member

Joined: Sep 2005

Posts: 11,615

Likes: 50

From: Baton Rouge, LA

Quote:

Originally Posted by soos

To which I believe iclick means the "correct" hole.

Yes, bad word choice. I just edited the message and changed it.

May 30, 2009 | 04:42 PM

#24

iclick

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Joined: Sep 2005

Posts: 11,615

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From: Baton Rouge, LA

Quote:

Originally Posted by UALCapt

So I am hesitant to place a two inch probe into a small (1/2"?) diameter oil channel - especially if this channel supplies oil flow up to the engine (or oil pump).

I didn't know there was such a channel integral to the plug we're discussing here, and would imagine you wouldn't want much protruding inside this channel since there doesn't appear to be much room. The HD or McEwan senders installed there using an adapter would pose no problem since the adapter should protrude little or none into this channel. If this channel is the outlet from the pan it would be going to the oil pump.

Last edited by iclick; May 30, 2009 at 04:48 PM.

May 30, 2009 | 06:19 PM

#25

UALCapt

Cruiser

Joined: Jan 2009

Posts: 139

Likes: 2

From: Northern Virginia

I agree. After looking closely at the Mcewen probe, I see it is very shallow and should pose no impediment to oil flow. Mine, however, would likely impede flow - bad idea! I'll stick with using the oil drain for my application.

Thanks everyone for all the good info!

May 30, 2009 | 06:40 PM

#26

iclick

Extreme HDF Member

Joined: Sep 2005

Posts: 11,615

Likes: 50

From: Baton Rouge, LA

Quote:

Originally Posted by FLuHX

Whoa, do they sell just the sending unit and the wire. Anybody got the instruction sheet and part number so I can go to the dealer to get this done. I got the oil cooler and the oil temp guage so all I need is the Moco updated parts.

Is it this 75324-05A oil temp guage or 26133-07A oil cooler kit?

Soos' part numbers jibe with those from my kit purchased in late 2006 (#75324-05). I just checked the H-D site and they show 75324-05A, which is the silver-faced gauge, so I assume this part number has the adapter included. That's what I'm hearing on other threads. To my surprise the kit doesn't cost any more than I paid 2½ years ago and I would've bet by adding the adapter HD would've felt justified increasing the price.

What I did was fabricate a small harness (see photo) that connects the gauge (POS and GND) to the existing ATG connector. The sender has a proprietary connector (IIRC), so you'd probably need the harness (70285-04). The only wire that needs to go from the sender to the gauge is the one going to the SIG connector on the gauge. You can ground the sender anywhere convenient, and I used an existing frame-mounted nut located in the cubby hole forward of the battery under the seat ('07), but any good ground (preferably to the frame) will do. That's it, from the sender ground to any ground, sender signal to SIG, 12V to POS, and ground to GND on the gauge.

May 30, 2009 | 07:09 PM

#27

atrain68

Road Warrior

Joined: Mar 2007

Posts: 1,377

Likes: 8

From: Atlanta, GA

Quote:

Originally Posted by iclick

Rumor has it that the adapter is now being included in the HD kit with the new part number superseded with an "A" on the end. Apparently HD now admits that the previously prescribed method is flawed and installing the sender in the pan is the best option.

The rumor is correct. The kit comes with everything you need so no trips to NAPA. The wire harness zip ties neatly down the right frame tube and follows the the rear brake line back toward the oil pan.

May 30, 2009 | 07:24 PM

#28

iclick

Extreme HDF Member

Joined: Sep 2005

Posts: 11,615

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From: Baton Rouge, LA

Quote:

Originally Posted by atrain68

Mmm, okay, but I don't want to see the wire on the right downtube. If I put it there it might as well be a neon light advertising its presence, as I'd see it every time I looked at the bike. I know, very ****. I ran mine under the tank, a slight hassle but a 15-minute job worth it for the cosmetic value, IMO.