look on line for a co. called bulldog electronics they have a lot of online info about installs and yes they are complex. you have to splice into harness coming out of steering colum, did one on my wife 88 ford van and spent quite a few hour under the dash.
__________________ technology is great when it works but one big pain in the ass when it doesn't Detroit Iron Rules, all the rest are just toys!
technology is great when it works 
but one big pain in the ass when it doesn't 
Detroit Iron Rules, all the rest are just toys! 
