Most Triumphs use the power supply for the reverse lamp circuit to power the
J type O/D, it just doubles out of the lucar terminal on the reverse switch
and across to the inhibitor switch, then up the shift lever to the switch on
the top, (or do the TR's still have it on the steering column, in which case
this is probably wrong), then back down the shifter to the solenoid then to
ground somewhere nearby on the O/D usually one of the bolts for the rear
1967 1300 FWD
1968 2000 Saloon
1972 2.5PI Saloon
1974 Sprinted Dolomite 1850
1975 Toledo in restoration!
http://www.mickdolphin.co.uk Spares Supplier.
| I'm wondering where I should drill the hole in my gearbox cover for the
| overdrive wiring?
| Also, the schematic shows that there is no relay for this overdrive. I'm
| wondering if this is a case where a relay would be a good thing, like the
| headlights, or really isn't required.
| Do not drill holes in the cover, there is already one there for the
| lamp wiring. Pass the O/D wires through the same hole. And, yes indeed,
| there is no relay required for the J-type overdrive since the solenoid
| on this unit only draws an amp or two. Dan Masters' book shows the wiring
| for this unit. You can use a relay if you like, I did (before I knew
| better) but if I had it to do over I would omit it.
| 57 TR3 (A-type)
| 71 TR6 (J-type)
| 80 Tr8
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