BJ7X tachometer question

Mainer7 · 01-13-05, 03:52 PM

Hi, I'm wanting to install a tach using the stock sensor (in the bellhousing of the 13bt.)
I don't have the stock one, either so my question is more theory than technical...
The connector dangling from the bellhousing has 2 wires, both appear to be black. In the original setup, did power go in one and then the "signal" would come out the other wire?
This is not an emergency but if anyone has any idea what each wire is supposed to transmit, it would be very helpful.
Thanks a bunch
J

lowenbrau · 01-13-05, 04:41 PM

The tach sender is just a resistance that changes as the teeth of the flywheel pass it. There is no polarity.

Stickboy · 01-13-05, 11:29 PM

I might be screwed up but IIRC the sensor has 1 lead. The tach receives 24v power from 1 lead, negative from another, and finally the lead from the sensor.

i could be wrong however....

-mike

Mainer7 · 01-14-05, 05:56 AM

Hmmm, maybe I've got the wrong lead. It is round/cylindrical and is white plastic. Are there other leads off the bellhousing? I'l re-check thanks!

Island Moose · 01-14-05, 09:08 AM

Can you take a photo when you locate it? I'll be going down the same road soon.

Mainer7 · 01-14-05, 09:15 AM

Absolutely no problem (if I find it)...Hope you get that injector/timing issue sorted out...

Greg_B · 01-14-05, 03:38 PM

The sensor part # is 83180-60040 and it seems to cross over to many applications, which infers that it is not voltage specific.

Attached is a picture of the sensor in a bellhousing, and the line that comes off it.

The sensor uses the "Hall Effect" I believe is the term.

gb

01-13-05, 03:52 PM	#1
Mainer7 IH8MUD Regular Join Date: Jul 2003 Location: Maine Posts: 252	BJ7X tachometer question Hi, I'm wanting to install a tach using the stock sensor (in the bellhousing of the 13bt.) I don't have the stock one, either so my question is more theory than technical... The connector dangling from the bellhousing has 2 wires, both appear to be black. In the original setup, did power go in one and then the "signal" would come out the other wire? This is not an emergency but if anyone has any idea what each wire is supposed to transmit, it would be very helpful. Thanks a bunch J __________________ '78 FJ40 13BT/H55F Saginaw PS 4" Skyjacker - Old Man Emu shocks 33x10.50 Super Swampers - stock wheels '91 yota pickup-22re, rust flakes

01-13-05, 04:41 PM	#2
lowenbrau IH8MUD Lifer Join Date: Jan 2003 Location: Calgary AB TLCA# 5513 Posts: 2,466	The tach sender is just a resistance that changes as the teeth of the flywheel pass it. There is no polarity. __________________ Rocky Mountain Land Cruiser Association TLCA # 5513 '87BJ74, '86BJ70, '78FJ45, '53M100, '90M101cdn I support our Troopies

01-13-05, 11:29 PM	#3
Stickboy IH8MUD Regular Join Date: Dec 2003 Posts: 303	I might be screwed up but IIRC the sensor has 1 lead. The tach receives 24v power from 1 lead, negative from another, and finally the lead from the sensor. i could be wrong however.... -mike __________________ 1986 FJ60 - 13BT/H55F powered (BJ60T?) 1986 VW Turbo Diesel Jetta w/ straight veg. oil conversion 1992 Dodge Ram 250 - 5.9 diesel All running 100% Homebrewed Biodiesel made from waste oil and homepressed mustard seed oil....

01-14-05, 05:56 AM	#4
Mainer7 IH8MUD Regular Join Date: Jul 2003 Location: Maine Posts: 252	Hmmm, maybe I've got the wrong lead. It is round/cylindrical and is white plastic. Are there other leads off the bellhousing? I'l re-check thanks! __________________ '78 FJ40 13BT/H55F Saginaw PS 4" Skyjacker - Old Man Emu shocks 33x10.50 Super Swampers - stock wheels '91 yota pickup-22re, rust flakes

01-14-05, 09:08 AM	#5
Island Moose IH8MUD Addict Join Date: Dec 2004 Location: Auckland NZ via Vancouver Island Canada Posts: 818	Can you take a photo when you locate it? I'll be going down the same road soon. __________________ MOOSE SOLD HER - SOMEDAY SOON JDM's...THEY SAVED THE BEST FOR THEMSELVES!!

01-14-05, 09:15 AM	#6
Mainer7 IH8MUD Regular Join Date: Jul 2003 Location: Maine Posts: 252	Absolutely no problem (if I find it)...Hope you get that injector/timing issue sorted out... __________________ '78 FJ40 13BT/H55F Saginaw PS 4" Skyjacker - Old Man Emu shocks 33x10.50 Super Swampers - stock wheels '91 yota pickup-22re, rust flakes

01-14-05, 03:38 PM	#7
Greg_B IH8MUD Lifer Join Date: Mar 2002 TLCA# 7091 Posts: 3,004	The sensor part # is 83180-60040 and it seems to cross over to many applications, which infers that it is not voltage specific. Attached is a picture of the sensor in a bellhousing, and the line that comes off it. The sensor uses the "Hall Effect" I believe is the term. gb Attached Images Last edited by Greg_B; 01-14-05 at 05:15 PM.

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