We do have a used unit that we purchased many years ago but never used it. The parts book shows the possibilty of 3 different switches but I do not know what the part # is for this particular one. PM me if you are interested. Image Unavailable, Please Login
By the process of elimination, I believe that the part that Tom posted is part number 131473 (used on early TR). Here are photos of the other two TR AC blower fan speed switch ECUs: 134128 (6 wires - with replaceable 1A fuse socket) Image Unavailable, Please Login 140151 (4 wires - no fuse) Image Unavailable, Please Login Since the OP is looking for a "91", my guess would be that he/she needs 140151 (but he/she should be able to confirm/deny from the photos, and thanks for posting yours Tom -- I didn't have a photo of that one). tommie -- how do you know this? Is the symptom: 1. no blower speed works, or 2. full speed works OK, but no speed below full speed works? If #2, it's more likely IMO that the power transistor has failed.
In addition to the power transistor failure, there is also the fuse that Steve mentioned on the early switches that can blow. You can the socket for it on the two earky switches above.
it is the 140151 fan switch that i need i did change the transistor and only get high speed on the fan after a delay. i still do need a replacement for car #2 thanks if there is any way to build or improvise a different set up for the switch please someone let me know thanks
does anyone know the value of the double pots for this control and possibly where to get a replacement thanks