Diagnosing cold start injector in Coupe GT

[RJA]

I am trying to diagnose why the cold start injector is not working in my '83
Coupe GT.  Seems the thermotime switch works OK (tried a new one just in
case) and injector itself sprays OK.  Appears that the thermotime switch is
not being grounded while the engine is cranking, suggesting that the hot
start pulse relay is not closing, which would ground the thermotime switch
and close the circuit.  The relay also pulses the cold start injector after
the initial on period during a cold start.

Problem is, I can't locate the relay anywhere in the car.  Bentley shows
wiring diagram for '81 and '82 Coupe (but not '83), looks like not all the
4000's have the pulse relay installed.  The photo of the relay in Bentley is
for a different fuse box layout, doesn't match mine.  I've checked all the
relays in the fuse box and the ones under the driver's side dash, it doesn't
appear to be any of them from what I can tell...  can anyone help?  Perhaps
the service manual for the later CGT's would have more info?

-- Rich
   '83 Coupe GT
   '90 200q