Harlan Custom Shift Light install?

1FastGT

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So i had purchased a shift light from this company their hand made. the guy i guess owns a Camaro, and has designed them to fit snugly(grammer) into the little circular vent on the driver side pillar.

gauges2.jpg


the shift light only has a power ground and signal wire. (3 wires) it says in the directions to "Green Wire – This is the Tach input to the module. This can be either from the Tach line of the engine
computer or from the switched side of an ignition coil."


i had attached it to the wire going to my ignition coil (1994 mustang GT) and i set the shift light for 5800 RPMS and the light comes on when you hit 3000 RPMS with more then 3/4 throttle. so i figured not a good spot. and i tried to find the Tach wire from the ECU. (OBD1)

the signal just seems to erratic and inconstant from where i had it setup at.

where is the Tach wire on the ecu harness located a picture would be wonderful!!!

someone PLEASE HELP.


links:

http://www.harlan-engineering.com/store/store.html


http://www.harlan-engineering.com/store/shiftlight/Instructions.pdf
 

vermilion

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i have a raptor shift light and wired it behind the gauge cluster all 3 wires. with plastic wire splices.
 
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1FastGT

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its a great quality shift light with the $1.00 bracket. is your car a 4.6 or 5.0. i need to know if the harness is any different.
 

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