87 td cruise ???

[oldiesel]

I am trying to sort out the weird cruise problems on my wagon.Sometimes it works ok,sometimes it wants to go WOT!!! sometimes it does nothing.The assumption is that the problem is likely the amplifier.The amp that is in it is the old style with no coding plug, i have a spare for my 91 2.5 that i hope will work in the 87with 603.Can one of you helpful fellows that has a functioning cruise in an 87 with 603 that has the newer style amp with the coding plug tell me the part number on the case of the amp and the number on the coding plug. i know its a pain to look at but i really need some help here.CANCEL THIS REQUEST, FOUND THE INFO I NEED the little black coding resistor p/n 005 545 46 32 that plugs into the cruise amp,anybody got one ?
TIA Don