I am trying get my rig ready for winter, and I have a problem with the
Idle Stabilizer System on my 88 GL. I have been unable to identify
whether it's the ISV or the ISC box in front of the right rear taillight
assembly.

Anybody got a loaner ISC box that works? The bloody things are expensive
new and I would just as soon like to avoid replacing something without a
positive test result from a swap-out with a working unit. BTW, the ISV
has NEVER vibrated and buzzed in a detectible way.... but it worked for
a long time. Now the system system simply doesn't work. I pulled the box
an looked a the boards in side and there are some components that look
burned. That is most likely a sign, but I just want to be sure. I'm not
fond of replacing electrical stuff with used parts, so I would like to
know for sure before I order up.

Thanks.

John Rodgers
88 GL Driver
Chelsea, AL