Hook up Electric Choke

[mark79,80]

I replaced the hot air choke on a 1979 Corvette with an electric choke from a 1980 Corvette.
Question:  Does the end of the choke that contacts the choke linkage need to be isolated from grounding?
On the 1980 the end of the choke linkage has a rubber tip.  On the 1979 the end of the choke linkage has a metal slot that the choke coil fits in. 
I have connected it this way and the choke works fine, but read somewhere that the tip of the choke needs to be
isolated from the choke linkage or it will short out.

[429bbf]

good question ive never really thought about it . i just discard the gasket from behind the choke and insulate the linkage tip.have to wait for someone else to chime in.

[Cliff Ruggles]

The factory chokes ground on the housing and only use one wire.

Some aftermarket replacement choke coils will use two wires, and can be used with the original hot-air choke system in place (not sure why one would want to do this?).

The choke we sell clocks correctly and works like it's supposed to. 

I will NOT put a used electric choke coil in place for any reason.  Every single time we re-use a choke coil to save a customer money, they fail quickly.  I suppose this happens since most are at least 25-30 years old, and sat around long enough the heating element got some rust on it, so they burn up shortly after being placed in service......Cliff