It appears M42club is down, so while I was helping someone with an E30 318i 318iS M42 cruise retrofit I thought I'd post it on here so the info would be available.
To add cruise you need:
-Late E30 Cruise Harness (61121385082)
-Late E30 Cruise Module (1385557 or 1386189)
-Late E30 Cruise Stalk for vehicles with SRS since 318iS is SRS only (1385135 is SRS stalk, 1385130 is non-SRS stalk and will sit further back away from the steering wheel, which is sometimes nice if you no longer have the factory airbag wheel in your car)
** You can also use early E30 cruise harness/module/stalk but the brake switch plug will be different and won't have accel/decel function.
-M42 E36 Bowden Cable (65718357087)
-E36 Cruise Actuator Bracket (1387003 is standard E36 M/S50/52, requires slight bend. 8366496 is E36 M42/3/4 and may be a direct fit and is cheap new. I just haven't confirmed it).
-Late E30 Cruise Actuator Head (1386242. Early M20 pre 09/87 actuator 1373681 may work but I'm not sure if it'll play nicely with the accel/decel function of the 09/87+ module and cruise stalk. Pre 09/87 cruise didn't have accel/decel, only stop/resume).
E30 318i/iS M42 cars don't have the spot on the power distribution block under the dash that sends out brake switch signal like on 6cyl e30 models, as they never got shipped to the US with cruise control. Thus, the cruise harness needs to be spliced into the brake switch wiring. It mostly just plugs in, but you need to splice the brake switch wiring into to the cruise harness so the cruise knows to shut off with the brake.
The wiring bit is hosted on jakeb's site, linked here: http://theguestroom.net/car/318cruise/
To add cruise you need:
-Late E30 Cruise Harness (61121385082)
-Late E30 Cruise Module (1385557 or 1386189)
-Late E30 Cruise Stalk for vehicles with SRS since 318iS is SRS only (1385135 is SRS stalk, 1385130 is non-SRS stalk and will sit further back away from the steering wheel, which is sometimes nice if you no longer have the factory airbag wheel in your car)
** You can also use early E30 cruise harness/module/stalk but the brake switch plug will be different and won't have accel/decel function.
-M42 E36 Bowden Cable (65718357087)
-E36 Cruise Actuator Bracket (1387003 is standard E36 M/S50/52, requires slight bend. 8366496 is E36 M42/3/4 and may be a direct fit and is cheap new. I just haven't confirmed it).
-Late E30 Cruise Actuator Head (1386242. Early M20 pre 09/87 actuator 1373681 may work but I'm not sure if it'll play nicely with the accel/decel function of the 09/87+ module and cruise stalk. Pre 09/87 cruise didn't have accel/decel, only stop/resume).
E30 318i/iS M42 cars don't have the spot on the power distribution block under the dash that sends out brake switch signal like on 6cyl e30 models, as they never got shipped to the US with cruise control. Thus, the cruise harness needs to be spliced into the brake switch wiring. It mostly just plugs in, but you need to splice the brake switch wiring into to the cruise harness so the cruise knows to shut off with the brake.
The wiring bit is hosted on jakeb's site, linked here: http://theguestroom.net/car/318cruise/
Comment