Hello everyone, I found something fascinating. Seats from a '98 Buick Riviera will bolt directly to the power base from 1973! No drilling, the bolt holes line up perfectly. Because the wire colors are repeated I'm coloring text that refers to the switches in blue and text about the bases in brown. The '98 Riviera bases raise the seats too high and the 1973 switches do not control all of the motions of the seat. So the ideal solution is to wire the Riviera switches to the 1973 base. I need our electronic specialists to help me sort out the wiring. Here's what I need to make it work: To get the front of the seat to go up the switch has +14.8v Grey. The base needs +14.8v on Green and White. To get the seat to move forward the switch has +14.8v Tan. The base needs +14.8v on Light Blue and White. To get the rear of the seat to go up the switch has +14.8v Yellow. The base needs +14.8v on Tan and White. To get the front to go down the switch has +14.8v on White. The base needs +14.8v on Green and Blue. To get the seat to move back the switch has +14.8v on Light Green. The base needs +14.8v on Light Blue and Blue. To get the rear of the seat to move down the switch has +14.8v on Light Blue. The base needs +14.8v on Tan and Blue. The White wire from the base needs to connect to Grey, Tan and Yellow from the switches, but Grey, Tan and Yellow cannot connect to each other. The same problem applies to the base Blue wire which connects with Light Green, White and Light Blue from the switches. If we assume a 20 amp fuse and 15volts we have 300 watts the circuit might need to handle. If this is too much, relays could be used to lower the wattage. To add one last wrinkle to the problem, the switches allow the front and back to be raised or lowered simutaneously so the circuit should allow Grey and Yellow from the switches to connect with Green, Tan and White on the base for going up. For going down White and Light Blue from the switches connect to Green, Tan and Blue on the base. Here's a quick chart of the wiring I need. Switch: Grey -------> Base: Green, White Switch: Tan -------> Base: Light Blue, White Switch: Yellow -------> Base: Tan, White Switch: White -------> Base: Green, Blue Switch:Light Green ---> Base: Light Blue, Blue Switch: Light Blue ---> Base: Tan, Blue I need to isolate Grey, Tan and Yellow from each other and Light Green, White, Light Blue from each other. Would you recommend diodes or would transisters and relays be better? Is there something else that would work? Whatever specifications you can provide to help me buy parts would be appreciated. Thanks for your help, John
