BroncoII tach's

dave-stjohn · Post by **dave-stjohn** » Mon Nov 29, 2004 7:13 pm

I have a 86 B2 and the tach doesn't work, the needle was broken off so I went ahead and got a new one from the boneyard and it doesn't work either, the gauges all connect to that instrument motherboard so I haven't been able to find a wire to see if one is broken, does anyone know how to find this out?

DBrown · Post by **DBrown** » Mon Nov 29, 2004 8:39 pm

there is a green wire that goes from the coil to the harness on the firewall on the driverside. trace that wire it controls the tach. wireing problems can be frustrating.....don't get upset if it takes you a little time to find the diconnection.

dave-stjohn · Post by **dave-stjohn** » Tue Nov 30, 2004 8:41 am

thanks for the info, I'll give this a shot and see how it works.

Trigger_2001 · Post by **Trigger_2001** » Tue Nov 30, 2004 9:14 am

TRACE THE WIRES!!!!!!!!!!! I can't stress this enough. I spent at least $100 i didn't need to because i didn't slow down and trace the wires.

DZK007 · Post by **DZK007** » Tue Nov 30, 2004 7:44 pm

Yup, Trigger has the right idea. Trace the wires and verify the connections. Use the finest toothed comb you got.

DBrown · Post by **DBrown** » Tue Nov 30, 2004 7:48 pm

a volt meter works better then a comb

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BroncoII tach's

BroncoII tach's

tach wire