2003 E350 tach pickup wire?? - E-350 Super Duty Ford Cars & Trucks

bad tach, seems .
bad tach, or bad wires to it or power to it bad.
i dont know what engine option you have
but most use the ignitor signal to do this.
later about 1996 the ECU uses CKP sensor to run the tach directly
in that case bad tach, bad wires to tach or bad power feed to it.
it only has 3 wires.
power
ground
sig
one is bad, or its bad.

connect tach wire to negative side of ignition coil and ground anywhere you find a good surface for the ground. there should be instructions that came with tach.

Hello there
FORD TRUCK
Wheel Nut Torque Specifications
Make/Model Description Years Torque Make/Model Description Years Torque
FORD (continued)
FORD TRUCK
E250 Van 8 Lug, 9/16" 2008-88 140 -160 ft lbs
E350 Van 8 Lug, 9/16" 2008-88 140 -160 ft lbs
Escape - 2003-01 98
Excursion - 2003-01 160
Excursion - 2000 148
Expedition - 2003-01 150
Expedition 19mm Hex 2000 100
Expedition 21mm Hex 2000 150
Expedition - 1999-97 100
F Super Duty Pickup 10 Lug, 9/16" 2003-99 165
F Super Duty Pickup 10 Lug, 9/16" 1998-96 140
F150 Pickup - 2003-01 150
F150 Pickup 19mm Hex 2000 100
F150 Pickup 21mm Hex 2000 150
F150 Pickup - 1999-88 100
F250, F350 Pickup 8 Lug, 9/16" 2003-01 160
F250, F350 Pickup 8 Lug, 9/16" 2000-99 148
F250, F350 Pickup 8 Lug, 9/16" 1998-88 140
Ranger, Windstar - 2003-87 100

Try disconnecting the four wire connector at the distributor,jumper terminals "A" and "C"(black to green) on the distributor side. this eliminates the ESC module and lets you deal with basic HEI. ohm the pickup coil 500-1500 ohms.use an ac volt meter white wire and green wire in the dist.,crank the engine.at least .5 vac,usually about 1volt.low voltage with a good pickup means a weak magnet.New cap& rotor? I've seen rotors burn thru...they look fine but will arc down to the advance weights.Make sure you have at least 9v at the big pink wire while cranking.disconnect any aftermarket tach,unplug the factory tach at the cap...If you installed a hi output coil,they are tough on ignition modules...Some things to try.

connect the tach on the coil - negative side that goes to the distributor

I'm sure it's the number one cylinder.

no, you need to buy an autometer tach adapter and tap it in to the harness on the passenger side firewall then run your tach from the tach adapter to your car. Dont mess with the cluster.
go to autometes website and it will tell you how to wire and what pin to splice in. The whole thing will take like 10min to do.

the tach should have a switch on the back for different amount of cylinders

as far as i know all of the 97 s-10 came with these unless it is an automatic, they dont have thre prewiring for the tach but you can get a signal interceptor that goes beween the computer harness and the computer that will pick up the crank sensor's signal and send it to an aftermarket tach

just check out this site
how to install a tach