need 1978 power antenna wiring diagram

[Barney Eaton]

I repair power antenna.... have one from a 1978 Eldorado that has multiple problems and because it was a short lived Delco design, parts are hard to find. 

I believe a later Slimline Delco design can be used as a replacement.  However the 1978 (and maybe '77-79 )  had the extra dash switch to lower the antenna

without turning off the radio or turning of the ignition.   Would like to see the schematic to verify.....  the three wire power connector is the same.

If you have a service manual with the wiring diagram......it would be a great help if you could post it

The answer could help other owners with one of these early Delco with a problem convert to a Slimline. 

The antenna on the left is the late '70's Delco.... the black plastic motor housing is the 1980 and later Slimline. 

Thanks