sending units on cylinder head

donm · Post by **donm** » Mon Jul 19, 2010 1:59 pm

I have 2 single wire sending units on the head of my carbed '80 Spider. What are they each for? Someone told me the front one is emmisions related and the second one triggers an overheat light on my dash but I have no such light. Can someone shed some light here for me?

Don

ClarkTheShark · Post by **ClarkTheShark** » Mon Jul 19, 2010 2:06 pm

one is the temperature gauge. and im not sure what the other one does. i don't think it has anything to do with emissions though.

pastaroni34 · Post by **pastaroni34** » Mon Jul 19, 2010 2:23 pm

Don,
the overheat light is built into the temp gauge, the gauge will peg and the light will come on.

donm · Post by **donm** » Mon Jul 19, 2010 3:13 pm

Do you know which sending unit that one is? What is the other one for?

Don

BEEK · Post by **BEEK** » Mon Jul 19, 2010 11:23 pm

if you pull both sending units from the head the one with the flat bottom is the switch, the one with the smaller extension on the bottom is the resistor. the wires can be on either as one works the guage and the other just peg's it, the switch just grounds the guage as a failsafe

sending units on cylinder head

sending units on cylinder head

Re: sending units on cylinder head

Re: sending units on cylinder head

Re: sending units on cylinder head

Re: sending units on cylinder head