temp sending unit wiring

[Soma576@xxxx]

Hello All,

this weekend i would like to diagnose my temp sending unit problem/temp gauge 
problem. right now it is stuck about 1/3 of the way up on the gauge and it 
will not reset when you turn the key. it's just stuck there. apparently 
this is the type of gauge that will keep your last position when you turn the 
car off, then when you start it again, all the needles should drop back down. 
that leads me to believe that i have a wiring problem or a bad temp sending 
unit. i have a new sending unit from Grady but i would also like to check 
the wires. the previous owner said his mechanic played with the wires a bit 
and it worked again, now it doesn't work again. 

what i would like to do is totally rewire the sending unit from the engine to 
the dash with some high-heat resisting wire. as i look at the wiring 
diagram, the wire goes from the sending unit with a ground on one end to a 
resistor or a capacitor of some sort (i think) then to the dash. i think 
i'll be ok as long as i rewire it from the engine back to whatever that 
resistor or something is. however, the old wire is all tied up in the wiring 
braid and i think it's best to leave all that stuff well enough alone. 

could someone who has done this before explain to me where this old wire 
goes? it goes from the sending unit to the braid to the (insert missing 
parts here) to the dash gauge. that's about all i know, besides it being a 
blue/green wire. what i need is where that resistor or capacitor is. 
probably way up in the dash, right? ok, if it's too tough to get to i'll 
settle for just splicing it into the old wire before it gets to the dash but 
still underneath that area. can someone tell me where a good spot to do this 
at would be? 

also, what about the ground. is that the outside of the sending unit? i 
assume if i just connect a wire from the sending unit to the next piece later 
down the path i'll be ok, just like the old one was hooked up

thanks!
Andy

Soma576@xxxx
1982 DeLorean DMC-12 VIN#11596
Fargo, ND 58102


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