1978 F100 "Rooster"

[StoryBoyof94]

I have a 1978 Ford F100 4x4 with a 1992 Big Block 460 im building. Im wanting to make a custom gauge, how hard is it to hook up a sunpro speedo?

 

[Mil1ion]

Easy 4 wires

Blk -grd
Bue - light
White- tach signal
red - Power

 

[StoryBoyof94]

work on the stock cable?

 

[Mil1ion]

Explain stock Cable ?....


The Tach has 4 wires


red to power (Under dash)
Blue > Light (Connects Under dash)
Ground > (Connect under dash)
White > Signal..run to TACH (-) terminal to coil

 

[DNFXDLI]

Explain stock Cable ?....


The Tach has 4 wires


red to power (Under dash)
Blue > Light (Connects Under dash)
Ground > (Connect under dash)
White > Signal..run to TACH (-) terminal to coil

Coz he was asking about a speedo.......

 

[Mil1ion]

Stupid me ..............

I think Tach

What will the electronic speedo use as a rpm sender ?

There isn't any Electronic speedo signal source and the 78-79 uses the OEM speedo cable/with cable sensor.


You may ave to rob the system from a newer truck with sensor on the driveshaft or transmissin

 

[StoryBoyof94]

yea. i could do the tach easy, i was asking bout the speedo. will the stock cable work on aftermarket speedos?

 

[DNFXDLI]

Best check with the manufacturer of the speedo, I recall in the old days, some worked and some didn't.

 

[StoryBoyof94]

im buying a sunpro speedo and i was hopeing it would work in the stock cable but ti think its all electrical, so ill have to buy an adapter kit

 

[StoryBoyof94]

thanks for all the help guys, i found a auto meter speedo that will work on my stock cable.