I working on a 1971 Mazda R100 someone cut the harness and I have a hand full of wires I can't find on the diagram the car now has a s3 12a engine and 79 transmission here are some pictures and a list of wires I need to figure out

Blue - thermal sensor
Blue red - thermal sensor
Black yellow thin- starter
Black yellow thick - starter
Yellow white - water temp
Yellow red- oil pressure switch
Green yellow- reverse lights --lights only shut off in 5th gear
Red yellow - reverse lights-- lights only shut off in 5th gear
Solid black--?????
Solid white--?????
Solid yellow-?????
Black white - alternator??????
White black - ?????
White red -- alternator
I think most of this is right I cant seem to find a wiring diagram that is consistent with all the color i have to work with

Also if anyone has a copy of the wiring diagram that is in the original FSM that would be a great help the only pdf I have found of it is extremely blurry if I try to zoom the image and the diagram that I find posted everywhere else is not completely accurate

Black yellow thin- starter

Black yellow thick - starter

Yellow white - water temp

Yellow red- oil pressure switch

Green yellow- reverse lights --lights only shut off in 5th gear may need a washer in between ??

Red yellow - reverse lights-- lights only shut off in
5th gear may need a washer in between??

Solid black--????? Not ground and does not ha power

Solid white-- leads to alternator regulator not used

Solid yellow-????? Has 12v

Black white - alternator --L????

White black - leads to alternator regulator not used

White red -- alternator ---B

I think most of this is right but I still need to figure out which wire leads to R on alternator

It sounds like you have a GSL SE trans or similar, and that you have hooked up to the "over-top" (5th gear) switch rather than the reverse switch.

The 5th gear switch is up on the right, the reverse switch is lower on the left (USA drivers side) and may have red wires.

i wont bother re-wiring it....just sell it to me. :lol::lol::lol:

I believe it is a 1980 5 speed trans the switch has no wires on it just two bullet style prongs that come straight out of the sensor like the Rx2 transmission switch . It's located on the left side of the tail shaft (driver side) 5th gear switch is on the top left (driver side) of bell housing behind the slave . Both switches react in the same matter on shut off light in 5th.

awe man too late you should have spoke up earlier I would have had no problem selling it to you lol


P.S. It's not my car

Got my reverse light issue figured out transmission had three switches and the owner had removed the reverse switch since he was having clearance issues .......... 30 min a hammer and a reverse switch later and it works !!! Don't try this at home I recommend sourcing out a Rx2 -Rx3 transmission if you can ( it will fit inside the narrow tunnel ) lol but now WTF is the sensor on the tail shaft housing for ??????

Foxed.ca - Mazda RX-7 Manuals

you will find wiring diagram for the rx2 which is the closes one, all kinds of free manuals for the Rotary

Thanks Tonka I figured out the problems the rx2 wiring was to different to use basically the only wires that were the same were the ones that I already had wired so I ended up having to trace the rest of them back and few wires I had to eliminate which were for the alternator regulator since the new one has one built in

:blush::blush::blush:....you got my hopes up for a minute.....tell the Owner it its not blue or red i'm interested in buying it. post some pics if you get a chance.

it's red lmao he says it use to be a trampoline before he saved it bought as a roller and store it for 15 years first