Ordered up a set of GM style towing mirrors for the project...
Heated....Powered.... Has turn signal and backup light (LED that lights up aft and to the sides)
Much larger than the Dodge mirrors AND the wiring will interface readily with the GM switches...
Looking over all my GM schematics for the various rigs.....THESE ALL include the various RPO CODES in the schematics (Regular production option)
These are USUALLY on a printed sticker in the glove box.....STILL PRESENT AFTER 30 YEARS...NOT LIKELY
After studying all the various difference it boils down to some added plugs for different mirrors (With signals and heaters)
The RPO tag is long missing on my donor rig.....We have a standard wiring harness.
The basic power mirror harness is all the same with the exception of the added wires IF the heaters and signals are present.
The other difference is wire color.
The S-Wagons used the older standard color codes through the GEN 1 rigs.....Gen 2 was all together different
The mirrors I ordered up are for GMT 400 trucks (1988-1999) (With a couple odd ducks)
The wiring plugs are all the same ......Wire colors changed but the locations in the plugs are the same...
CONFUSED YET ?????
After several cups of coffee and comparing the schematics of the S-wagon, The GMT 400 trucks and the Square body rigs......I got it scoped out..
Bottom line is to have parts that are replaceable, available and to be able to get all things functioning easily......
STANDARD OFF THE SHELF STUFF
Some parts look great....until you go to find them.....So many have been discontinued by the mfg and NOT picked up by the after market.
Even though the S-Wagons are popular.....The Gen 1 parts like switches and such are tough to locate......
Lots of parts like sheet metal and such are readily available in the after market...AND the bone yards.
So this little adventure is coming along nicely.
The last thing I want is to have the cat with parts that can't be readily replaced......Especially electrical stuff.
Looking at tracking....Looks like the new mirror switch is at the post office and the shifter should be here today .....
I want to get the new mirrors on the table and TEST wire them up and make sure we have proper function.
Then make up the wiring diagram accordingly to allow the wires to all connect easily at assembly
Ordered up a good chunk of 16/21 cable (16 gauge with 21 colored conductors)
This will allow wiring the mirrors, rear door locks and a few other items into the new switch panel
Stuff like the factory lighting will all be kept pretty much as GM had it with a few exceptions....
The tilt hood will require some rerouting and lengthening of the front wires.
Wires to the rear cabin will jump across from the front cab and then connect via a multi wire plug (Tail lights, dome lights, signals and such.....also the fuel gauge wiring is in that bundle.
Two tanks going in......So will add a switch valve to swap tanks and change the sending units from Left to Right
I hope some extra time thinking this through will allow for stuff to go smoothly.
All engine controls will use existing factory under hood wiring....so no worries.
Dash controls and things like ignition switch, signals, head lights.....interior controls are all right where MA GENERAL put them.
Really pretty simple.....Just a lot of midnight oil and coffee to get it RIGHT ......OH YESSSS....There will likely be a few change orders.....BUT THE EXTRA THOUGHT should keep it to a minimum......
The new shifter has the switches for the neutral safety (N&P) as well as backup lights
The TH350 tranny does not use any electrical stuff at all....
I think the tail gate on the S-Wagon (Rear cabin) has an electric gate latch release.....Will need to see if it's worth fooling with.......I know the rear window has a heated glass.....Not sure if it is in good order......
Might be a good plan to make provisions in the new wiring to pick up those options.......We will see....