V8 Toyota 4runner gauge options??

cbrwags · 10-15-2009, 11:48 AM

I have a sbc engine in my 1990 4runner and want the factory gauges to work. I could use some help finding the tach output wire that I can hookup to the coil as for the temp I have an idea to use a stock v6 unit from a junkyard along with oil pressure unit I just need the gauge to work and dont want to blow the cluster so on that I could also use some help on getting the right sending unit and the right wire to in the cluster to run to.

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Adam F · 10-16-2009, 09:55 PM

All the factory gauges work in my truck.

For the tach, I probed the wires and found the wire in the harness that was connected to the tach input on the gauge. I then spliced that wire into the tach ouput terminal on my HEI distributor.

Once I had it hooked up, I had to adjust the potentiometer in the cluster to compensate for a V8. I used a timing light that had an RPM readout and matched it to that.

For the oil pressure gauge, I used the stock Toy sender and wire. I had to get a 90 degree adapter so it would fit under the distributor.

I used a reducer to fit the stock water temp gauge sender in the block, along with the original wire.

cbrwags · 10-17-2009, 01:24 PM

Thanks for the info. Do you know what wire is from the tach? I also need what wire from the cluster is for the temp and oil pressure someone cut the wires I can probe them like you said but if I can get a color of what wires I need that would help so much and save me a load of work.

Adam F · 10-18-2009, 09:03 PM

I cant remember off the top of my head. When I get some time I can check. Might be a while though. Plus, mine is a 1st gen, yours is a 2nd, so its probably not the same.

One way to find out is to download an FSM and go through the wiring diagrams.

Here's a link

http://www.ncttora.com/fsm/1990-1995...es/wiring.html

cbrwags · 10-19-2009, 10:53 PM

That is great Thanks Adam.

10-16-2009, 09:55 PM	#2 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	All the factory gauges work in my truck. For the tach, I probed the wires and found the wire in the harness that was connected to the tach input on the gauge. I then spliced that wire into the tach ouput terminal on my HEI distributor. Once I had it hooked up, I had to adjust the potentiometer in the cluster to compensate for a V8. I used a timing light that had an RPM readout and matched it to that. For the oil pressure gauge, I used the stock Toy sender and wire. I had to get a 90 degree adapter so it would fit under the distributor. I used a reducer to fit the stock water temp gauge sender in the block, along with the original wire. __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear

10-18-2009, 09:03 PM	#4 (permalink)
Adam F Registered User Join Date: May 2002 Location: Cincinnati Ohio Posts: 2,398	I cant remember off the top of my head. When I get some time I can check. Might be a while though. Plus, mine is a 1st gen, yours is a 2nd, so its probably not the same. One way to find out is to download an FSM and go through the wiring diagrams. Here's a link http://www.ncttora.com/fsm/1990-1995...es/wiring.html __________________ 88 4Runner. 350 V8, R150 5-speed. SAS, 36" TSL's, elocker rear Last edited by Adam F; 10-18-2009 at 09:05 PM.

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10-17-2009, 01:24 PM	#3 (permalink)
cbrwags Registered User Join Date: Oct 2009 Location: Oregon Posts: 34	Thanks for the info. Do you know what wire is from the tach? I also need what wire from the cluster is for the temp and oil pressure someone cut the wires I can probe them like you said but if I can get a color of what wires I need that would help so much and save me a load of work.

10-19-2009, 10:53 PM	#5 (permalink)
cbrwags Registered User Join Date: Oct 2009 Location: Oregon Posts: 34	That is great Thanks Adam.